Edit Profile (opens in new tab) Honkala, Juha Co-Author Distance Author ID: honkala.juha Published as: Honkala, Juha; Honkala, J. Documents Indexed: 120 Publications since 1982 Co-Authors: 5 Co-Authors with 10 Joint Publications 182 Co-Co-Authors Co-Authors 110 single-authored 4 Kuich, Werner 3 Salomaa, Arto Kustaa 1 Charlier, Emilie 1 Rigo, Michel 1 Ruohonen, Keijo all top 5 Serials 22 Theoretical Computer Science 7 Discrete Applied Mathematics 7 Bulletin of the European Association for Theoretical Computer Science EATCS 6 Information and Computation 6 Fundamenta Informaticae 6 Journal of Universal Computer Science 5 Acta Informatica 5 Journal of Computer and System Sciences 4 International Journal of Algebra and Computation 4 International Journal of Foundations of Computer Science 4 RAIRO. Informatique Théorique et Applications 4 RAIRO. Theoretical Informatics and Applications 3 Acta Cybernetica 3 International Journal of Computer Mathematics 3 RAIRO. Theoretical Informatics and Applications 2 Information Processing Letters 2 Semigroup Forum 2 Annales Societatis Mathematicae Polonae. Series IV 2 Bulletin of the European Association for Theoretical Computer Science (EATCS) 2 Theory of Computing Systems 2 Journal of Automata, Languages and Combinatorics 1 Communications in Algebra 1 Discrete Mathematics 1 Annales Academiae Scientiarum Fennicae. Series A I. Mathematica 1 Journal of Number Theory all top 5 Fields 116 Computer science (68-XX) 14 Number theory (11-XX) 9 Mathematical logic and foundations (03-XX) 9 Group theory and generalizations (20-XX) 5 Associative rings and algebras (16-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Information and communication theory, circuits (94-XX) 1 General algebraic systems (08-XX) 1 Dynamical systems and ergodic theory (37-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 82 Publications have been cited 284 times in 142 Documents Cited by ▼ Year ▼ A decision method for the recognizability of sets defined by number systems. Zbl 0639.68074 Honkala, Juha 22 1986 A short solution for the HDT0L sequence equivalence problem. Zbl 0945.68104 Honkala, J. 18 2000 Decision problems concerning thinness and slenderness of formal languages. Zbl 0909.68112 Honkala, Juha 14 1998 The freeness problem over matrix semigroups and bounded languages. Zbl 1294.15013 Charlier, Émilie; Honkala, Juha 12 2014 The equivalence problem of polynomially bounded D0L systems – a bound depending only on the size of the alphabet. Zbl 1039.68067 Honkala, Juha 10 2003 Watson-Crick D0L systems with regular triggers. Zbl 0972.68099 Honkala, J.; Salomaa, A. 9 2001 On Parikh slender languages and power series. Zbl 0846.68056 Honkala, Juha 9 1996 Bases and ambiguity of number systems. Zbl 0546.68066 Honkala, Juha 9 1984 On morphically generated formal power series. Zbl 0816.68077 Honkala, Juha 6 1995 A decision method for Parikh slenderness of context-free languages. Zbl 0865.68072 Honkala, Juha 6 1997 On Lindenmayerian algebraic power series. Zbl 0896.68086 Honkala, Juha; Kuich, Werner 5 1997 On the decidability of some equivalence problems for L algebraic series. Zbl 0879.68066 Honkala, Juha 5 1997 A necessary condition for the rationality of the zeta function of a regular language. Zbl 0675.68034 Honkala, Juha 5 1989 On D0L power series. Zbl 0945.68106 Honkala, J. 5 2000 On Parikh slender context-free languages. Zbl 0974.68098 Honkala, J. 5 2001 On the images of \(\mathbb N\)-rational sequences counting multiplicities. Zbl 1103.68579 Honkala, Juha; Ruohonen, Keijo 5 2003 Unique representation in number systems and L codes. Zbl 0537.94024 Honkala, Juha 5 1982 On sequences defined by D0L power series. Zbl 0946.68077 Honkala, Juha 4 1999 On number systems with negative digits. Zbl 0659.68098 Honkala, Juha 4 1989 A polynomial bound for certain cases of the D0L sequence equivalence problem. Zbl 0988.68106 Honkala, J. 4 2001 On the simplification of infinite morphic words. Zbl 1162.68031 Honkala, Juha 4 2009 The equivalence problem for DF0L languages and power series. Zbl 1059.68062 Honkala, Juha 4 2002 On a power series generalization of ET0L languages. Zbl 0843.68051 Honkala, Juha; Kuich, Werner 4 1996 On unambiguous number systems with a prime power base. Zbl 0793.11010 Honkala, Juha 4 1992 Products of matrices and recursively enumerable sets. Zbl 1401.03080 Honkala, Juha 4 2015 An \(n^2\)-bound for the ultimate equivalence problem of certain D0L systems over an \(n\)-letter alphabet. Zbl 1082.68051 Honkala, Juha 4 2005 Regularity properties of L ambiguities of morphisms. Zbl 0766.68079 Honkala, Juha 4 1992 A new bound for the D0L sequence equivalence problem. Zbl 1106.68060 Honkala, Juha 3 2007 The equivalence problem of D0L and DF0L power series. Zbl 0935.68061 Honkala, Juha 3 1999 A defect property of codes with unbounded delays. Zbl 0661.94019 Honkala, Juha 3 1988 It is decidable whether or not a permutation-free morphism is an L code. Zbl 0684.68091 Honkala, Juha 3 1987 The D0L \(\omega\)-equivalence problem. Zbl 1108.68069 Honkala, Juha 3 2007 Remarks concerning the D0L \(\omega\)-equivalence problem. Zbl 1066.68059 Honkala, Juha 3 2002 Decidability questions related to abstract numeration systems. Zbl 1076.68040 Honkala, Juha; Rigo, Michel 3 2004 L morphisms: Bounded delay and regularity of ambiguity. Zbl 0766.68078 Honkala, Juha; Salomaa, Arto 3 1991 The equality problem for purely substitutive words. Zbl 1216.68209 Honkala, Juha 3 2010 On generalized zeta functions of formal languages and series. Zbl 0744.68075 Honkala, Juha 3 1991 On generalized DT0L systems and their fixed points. Zbl 0824.68059 Honkala, Juha 2 1994 On the problem whether the image of an \(N\)-rational series equals \(N\). Zbl 1157.68383 Honkala, Juha 2 2006 On the simplification of HD0L power series. Zbl 1312.68117 Honkala, Juha 2 2002 On slender languages. Zbl 1049.68078 Honkala, Juha 2 2001 On D0L power series over various semirings. Zbl 1103.68577 Honkala, Juha 2 2003 On slender languages. Zbl 0898.68042 Honkala, Juha 2 1998 On Lindenmayerian algebraic sequences. Zbl 0896.68087 Honkala, Juha 2 1997 Decision problems concerning a power series genealization of DT0L systems. Zbl 0920.68065 Honkala, Juha 2 1997 Decision problems concerning algebraic series with noncommuting variables. Zbl 0889.03034 Honkala, Juha 2 1997 On infinite words generated by polynomial D0L systems. Zbl 0993.68077 Honkala, Juha 2 2002 On chains of word equations and test sets. Zbl 0931.68062 Honkala, Juha 2 1999 On four classes of Lindenmayerian power series. Zbl 0960.68607 Honkala, Juha; Kuich, Werner 2 1995 On images of D0L and DT0L power series. Zbl 1044.68093 Honkala, Juha 2 2003 Cancellation and periodicity properties of iterated morphisms. Zbl 1133.68037 Honkala, Juha 2 2008 It is decidable whether the image of an \(\mathbb N\)-rational sequence has a base. Zbl 1074.11017 Honkala, Juha 2 2004 A bound for the \(\omega\)-equivalence problem of polynomial D0L systems. Zbl 1112.68394 Honkala, Juha 2 2003 The language equivalence problem for HD0L systems having D0L growths. Zbl 1078.68086 Honkala, Juha 2 2005 Bounds for the D0L language equivalence problem. Zbl 1101.68658 Honkala, Juha 2 2004 Remarks concerning the freeness problem over morphism and matrix semigroups. Zbl 1339.20049 Honkala, Juha 2 2014 A characterization of regular languages as equality sets of HDT0L sequences. Zbl 1241.68079 Honkala, Juha 1 2012 On D0L systems with immigration. Zbl 0801.68104 Honkala, Juha 1 1993 The DF0L language equivalence problem. Zbl 1169.68477 Honkala, Juha 1 2003 Easy cases of the D0L sequence equivalence problem. Zbl 1001.68066 Honkala, Juha 1 2001 On the equivalence problem of algebraic series with commuting variables. Zbl 0856.68060 Honkala, Juha 1 1996 A power series approach to bounded languages. Zbl 0946.68080 Honkala, Juha 1 1999 On formal power series generated by Lindenmayer systems. Zbl 0959.68057 Honkala, Juha 1 2000 On images of algebraic series. Zbl 0960.68612 Honkala, Juha 1 1996 On \(N\)-algebraic Parikh slender power series. Zbl 0960.68092 Honkala, Juha 1 1997 A Kleene-Schützenberger theorem for Lindenmayerian rational power series. Zbl 0970.68086 Honkala, Juha 1 2000 Results concerning E0L and C0L power series. Zbl 0973.68154 Honkala, Juha 1 2000 Number systems and the injectivity problem for matrix representations of free monoids. Zbl 1203.20049 Honkala, Juha 1 2009 The equality problem for infinite words generated by primitive morphisms. Zbl 1167.68048 Honkala, Juha 1 2009 Decidability results for Watson-Crick D0L systems with nonregular triggers. Zbl 1044.68094 Honkala, Juha 1 2003 On D0L systems with finite axiom sets. Zbl 1027.68076 Honkala, J. 1 2003 The equivalence problem for languages defined by transductions on D0L languages. Zbl 1101.68051 Honkala, Juha 1 2005 D0L sequences and their equality sets. Zbl 1387.68168 Honkala, Juha 1 2017 A Kraft-McMillan inequality for free semigroups of upper-triangular matrices. Zbl 1309.68133 Honkala, Juha 1 2014 Rational series with high image complexity. Zbl 1371.68152 Honkala, Juha 1 2017 The finiteness problem for monoids of morphisms. Zbl 1314.20045 Honkala, Juha 1 2015 Discrete Watson-Crick dynamical systems. Zbl 1382.68072 Honkala, Juha 1 2017 Characterization results about \(L\) codes. Zbl 0751.68033 Honkala, J.; Salomaa, A. 1 1992 The sequence equivalence problem for primitive D0L systems. Zbl 1261.68089 Honkala, Juha 1 2013 Equality sets of morphic word sequences. Zbl 1285.68087 Honkala, Juha 1 2012 Quasi-universal \(k\)-regular sequences. Zbl 1523.11050 Honkala, Juha 1 2021 The class of HDT0L sequences is closed with respect to rational functions. Zbl 1177.68137 Honkala, Juha 1 2005 Quasi-universal \(k\)-regular sequences. Zbl 1523.11050 Honkala, Juha 1 2021 D0L sequences and their equality sets. Zbl 1387.68168 Honkala, Juha 1 2017 Rational series with high image complexity. Zbl 1371.68152 Honkala, Juha 1 2017 Discrete Watson-Crick dynamical systems. Zbl 1382.68072 Honkala, Juha 1 2017 Products of matrices and recursively enumerable sets. Zbl 1401.03080 Honkala, Juha 4 2015 The finiteness problem for monoids of morphisms. Zbl 1314.20045 Honkala, Juha 1 2015 The freeness problem over matrix semigroups and bounded languages. Zbl 1294.15013 Charlier, Émilie; Honkala, Juha 12 2014 Remarks concerning the freeness problem over morphism and matrix semigroups. Zbl 1339.20049 Honkala, Juha 2 2014 A Kraft-McMillan inequality for free semigroups of upper-triangular matrices. Zbl 1309.68133 Honkala, Juha 1 2014 The sequence equivalence problem for primitive D0L systems. Zbl 1261.68089 Honkala, Juha 1 2013 A characterization of regular languages as equality sets of HDT0L sequences. Zbl 1241.68079 Honkala, Juha 1 2012 Equality sets of morphic word sequences. Zbl 1285.68087 Honkala, Juha 1 2012 The equality problem for purely substitutive words. Zbl 1216.68209 Honkala, Juha 3 2010 On the simplification of infinite morphic words. Zbl 1162.68031 Honkala, Juha 4 2009 Number systems and the injectivity problem for matrix representations of free monoids. Zbl 1203.20049 Honkala, Juha 1 2009 The equality problem for infinite words generated by primitive morphisms. Zbl 1167.68048 Honkala, Juha 1 2009 Cancellation and periodicity properties of iterated morphisms. Zbl 1133.68037 Honkala, Juha 2 2008 A new bound for the D0L sequence equivalence problem. Zbl 1106.68060 Honkala, Juha 3 2007 The D0L \(\omega\)-equivalence problem. Zbl 1108.68069 Honkala, Juha 3 2007 On the problem whether the image of an \(N\)-rational series equals \(N\). Zbl 1157.68383 Honkala, Juha 2 2006 An \(n^2\)-bound for the ultimate equivalence problem of certain D0L systems over an \(n\)-letter alphabet. Zbl 1082.68051 Honkala, Juha 4 2005 The language equivalence problem for HD0L systems having D0L growths. Zbl 1078.68086 Honkala, Juha 2 2005 The equivalence problem for languages defined by transductions on D0L languages. Zbl 1101.68051 Honkala, Juha 1 2005 The class of HDT0L sequences is closed with respect to rational functions. Zbl 1177.68137 Honkala, Juha 1 2005 Decidability questions related to abstract numeration systems. Zbl 1076.68040 Honkala, Juha; Rigo, Michel 3 2004 It is decidable whether the image of an \(\mathbb N\)-rational sequence has a base. Zbl 1074.11017 Honkala, Juha 2 2004 Bounds for the D0L language equivalence problem. Zbl 1101.68658 Honkala, Juha 2 2004 The equivalence problem of polynomially bounded D0L systems – a bound depending only on the size of the alphabet. Zbl 1039.68067 Honkala, Juha 10 2003 On the images of \(\mathbb N\)-rational sequences counting multiplicities. Zbl 1103.68579 Honkala, Juha; Ruohonen, Keijo 5 2003 On D0L power series over various semirings. Zbl 1103.68577 Honkala, Juha 2 2003 On images of D0L and DT0L power series. Zbl 1044.68093 Honkala, Juha 2 2003 A bound for the \(\omega\)-equivalence problem of polynomial D0L systems. Zbl 1112.68394 Honkala, Juha 2 2003 The DF0L language equivalence problem. Zbl 1169.68477 Honkala, Juha 1 2003 Decidability results for Watson-Crick D0L systems with nonregular triggers. Zbl 1044.68094 Honkala, Juha 1 2003 On D0L systems with finite axiom sets. Zbl 1027.68076 Honkala, J. 1 2003 The equivalence problem for DF0L languages and power series. Zbl 1059.68062 Honkala, Juha 4 2002 Remarks concerning the D0L \(\omega\)-equivalence problem. Zbl 1066.68059 Honkala, Juha 3 2002 On the simplification of HD0L power series. Zbl 1312.68117 Honkala, Juha 2 2002 On infinite words generated by polynomial D0L systems. Zbl 0993.68077 Honkala, Juha 2 2002 Watson-Crick D0L systems with regular triggers. Zbl 0972.68099 Honkala, J.; Salomaa, A. 9 2001 On Parikh slender context-free languages. Zbl 0974.68098 Honkala, J. 5 2001 A polynomial bound for certain cases of the D0L sequence equivalence problem. Zbl 0988.68106 Honkala, J. 4 2001 On slender languages. Zbl 1049.68078 Honkala, Juha 2 2001 Easy cases of the D0L sequence equivalence problem. Zbl 1001.68066 Honkala, Juha 1 2001 A short solution for the HDT0L sequence equivalence problem. Zbl 0945.68104 Honkala, J. 18 2000 On D0L power series. Zbl 0945.68106 Honkala, J. 5 2000 On formal power series generated by Lindenmayer systems. Zbl 0959.68057 Honkala, Juha 1 2000 A Kleene-Schützenberger theorem for Lindenmayerian rational power series. Zbl 0970.68086 Honkala, Juha 1 2000 Results concerning E0L and C0L power series. Zbl 0973.68154 Honkala, Juha 1 2000 On sequences defined by D0L power series. Zbl 0946.68077 Honkala, Juha 4 1999 The equivalence problem of D0L and DF0L power series. Zbl 0935.68061 Honkala, Juha 3 1999 On chains of word equations and test sets. Zbl 0931.68062 Honkala, Juha 2 1999 A power series approach to bounded languages. Zbl 0946.68080 Honkala, Juha 1 1999 Decision problems concerning thinness and slenderness of formal languages. Zbl 0909.68112 Honkala, Juha 14 1998 On slender languages. Zbl 0898.68042 Honkala, Juha 2 1998 A decision method for Parikh slenderness of context-free languages. Zbl 0865.68072 Honkala, Juha 6 1997 On Lindenmayerian algebraic power series. Zbl 0896.68086 Honkala, Juha; Kuich, Werner 5 1997 On the decidability of some equivalence problems for L algebraic series. Zbl 0879.68066 Honkala, Juha 5 1997 On Lindenmayerian algebraic sequences. Zbl 0896.68087 Honkala, Juha 2 1997 Decision problems concerning a power series genealization of DT0L systems. Zbl 0920.68065 Honkala, Juha 2 1997 Decision problems concerning algebraic series with noncommuting variables. Zbl 0889.03034 Honkala, Juha 2 1997 On \(N\)-algebraic Parikh slender power series. Zbl 0960.68092 Honkala, Juha 1 1997 On Parikh slender languages and power series. Zbl 0846.68056 Honkala, Juha 9 1996 On a power series generalization of ET0L languages. Zbl 0843.68051 Honkala, Juha; Kuich, Werner 4 1996 On the equivalence problem of algebraic series with commuting variables. Zbl 0856.68060 Honkala, Juha 1 1996 On images of algebraic series. Zbl 0960.68612 Honkala, Juha 1 1996 On morphically generated formal power series. Zbl 0816.68077 Honkala, Juha 6 1995 On four classes of Lindenmayerian power series. Zbl 0960.68607 Honkala, Juha; Kuich, Werner 2 1995 On generalized DT0L systems and their fixed points. Zbl 0824.68059 Honkala, Juha 2 1994 On D0L systems with immigration. Zbl 0801.68104 Honkala, Juha 1 1993 On unambiguous number systems with a prime power base. Zbl 0793.11010 Honkala, Juha 4 1992 Regularity properties of L ambiguities of morphisms. Zbl 0766.68079 Honkala, Juha 4 1992 Characterization results about \(L\) codes. Zbl 0751.68033 Honkala, J.; Salomaa, A. 1 1992 L morphisms: Bounded delay and regularity of ambiguity. Zbl 0766.68078 Honkala, Juha; Salomaa, Arto 3 1991 On generalized zeta functions of formal languages and series. Zbl 0744.68075 Honkala, Juha 3 1991 A necessary condition for the rationality of the zeta function of a regular language. Zbl 0675.68034 Honkala, Juha 5 1989 On number systems with negative digits. Zbl 0659.68098 Honkala, Juha 4 1989 A defect property of codes with unbounded delays. Zbl 0661.94019 Honkala, Juha 3 1988 It is decidable whether or not a permutation-free morphism is an L code. Zbl 0684.68091 Honkala, Juha 3 1987 A decision method for the recognizability of sets defined by number systems. Zbl 0639.68074 Honkala, Juha 22 1986 Bases and ambiguity of number systems. Zbl 0546.68066 Honkala, Juha 9 1984 Unique representation in number systems and L codes. Zbl 0537.94024 Honkala, Juha 5 1982 all cited Publications top 5 cited Publications all top 5 Cited by 118 Authors 51 Honkala, Juha 11 Salomaa, Arto Kustaa 8 Charlier, Emilie 7 Bell, Paul C. 7 Rigo, Michel 7 Shallit, Jeffrey Outlaw 6 D’Alessandro, Flavio 6 Potapov, Igor 4 Intrigila, Benedetto 3 Bell, Jason P. 3 Ilie, Lucian 3 Karhumaki, Juhani 3 Ko, Sang-Ki 3 Massuir, Adeline 3 Ruohonen, Keijo 3 Semukhin, Pavel 2 Allouche, Jean-Paul Simon 2 Byszewski, Jakub 2 Carpi, Arturo 2 Cisternino, Célia 2 Daviaud, Laure 2 Goč, Daniel 2 Harju, Tero 2 Henshall, Dane 2 Hirvensalo, Mika 2 Kuske, Dietrich 2 Marsault, Victor 2 Mateescu, Alexandru 2 Nagel, Uwe 2 Nowotka, Dirk 2 Paperman, Charles 2 Păun, Gheorghe 2 Rampersad, Narad 2 Rowland, Eric S. 2 Rozenberg, Grzegorz 2 Saarela, Aleksi 2 Salomaa, Kai T. 2 Sosík, Petr 2 Varricchio, Stefano 2 Yu, Sheng 1 Adamczewski, Boris 1 Asada, Kazuyuki 1 Atanasiu, Adrian 1 Bárány, Vince 1 Berstel, Jean 1 Berthé, Valérie 1 Boiret, Adrien 1 Bozapalidis, Symeon 1 Bruyère, Véronique 1 Calude, Cristian S. 1 Cateland, E. 1 Chen, Shang 1 Cornelissen, Gunther 1 Csima, Judit 1 Csuhaj-Varjú, Erzsébet 1 Dassow, Jürgen 1 Dekking, Frederik Michel 1 Durand, Fabien 1 Esbelin, Henri-Alex 1 Filiot, Emmanuel 1 Forejt, Vojtěch 1 Fraenkel, Aviezri Siegmund 1 Frougny, Christiane 1 Gilbert, William J. 1 Gutan, Marin 1 Huang, Huanchang 1 Ibarra, Oscar H. 1 Ito, Masami 1 Jackson, Lisa A. 1 Jančar, Petr 1 Jürgensen, Helmut 1 Kiefer, Stefan 1 Klouda, Karel 1 Konieczny, Jakub 1 Krawczyk, Elżbieta 1 Kreczman, Savinien 1 Krenn, Daniel 1 Kuich, Werner 1 Leroy, Julien 1 Li, Jian 1 Liu, Jiamou 1 Lohrey, Markus 1 Maňuch, Ján 1 Maraj, Aida 1 Martín-Vide, Carlos 1 Maurer, Hermann A. 1 McQuillan, Ian 1 Michaux, Christian 1 Milchior, Arthur 1 Mitrana, Victor 1 Mitrofanov, Ivan Viktorovich 1 Nakano, Keisuke 1 Nicolas, François 1 Nishida, Taishin Yasunobu 1 Niskanen, Reino 1 Peitgen, Heinz-Otto 1 Piórkowski, Radosław 1 Prigioniero, Luca 1 Pritykin, Yuri 1 Ravikumar, Bala ...and 18 more Authors all top 5 Cited in 28 Serials 41 Theoretical Computer Science 11 Information and Computation 10 International Journal of Foundations of Computer Science 7 Journal of Computer and System Sciences 7 RAIRO. Theoretical Informatics and Applications 6 Discrete Applied Mathematics 5 International Journal of Algebra and Computation 3 Acta Informatica 3 Transactions of the American Mathematical Society 3 International Journal of Computer Mathematics 3 RAIRO. Informatique Théorique et Applications 2 Information Processing Letters 2 Journal of Algebra 2 Fundamenta Informaticae 1 Discrete Mathematics 1 Inventiones Mathematicae 1 Semigroup Forum 1 SIAM Journal on Computing 1 Combinatorica 1 Linear Algebra and its Applications 1 Journal of Mathematical Sciences (New York) 1 The Electronic Journal of Combinatorics 1 Theory of Computing Systems 1 Discrete Mathematics and Theoretical Computer Science. DMTCS 1 Natural Computing 1 Journal of Discrete Algorithms 1 Logical Methods in Computer Science 1 RAIRO. Theoretical Informatics and Applications all top 5 Cited in 16 Fields 131 Computer science (68-XX) 31 Number theory (11-XX) 20 Group theory and generalizations (20-XX) 19 Mathematical logic and foundations (03-XX) 9 Linear and multilinear algebra; matrix theory (15-XX) 5 Combinatorics (05-XX) 5 Associative rings and algebras (16-XX) 2 Commutative algebra (13-XX) 2 Algebraic geometry (14-XX) 2 Dynamical systems and ergodic theory (37-XX) 2 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 2 Information and communication theory, circuits (94-XX) 1 General algebraic systems (08-XX) 1 Mechanics of particles and systems (70-XX) 1 Biology and other natural sciences (92-XX) 1 Systems theory; control (93-XX) Citations by Year