Rendiconti della Accademia Nazionale delle Scienze Detta dei XL. Memorie di Matemàtica. Serie V Short Title: Rend. Accad. Naz. Sci. Detta XL, V. Ser., Mem. Mat. Publisher: Accademia Nazionale delle Scienze Detta dei XL, Roma ISSN: 0392-4106 Successor: Rendiconti della Accademia Nazionale delle Scienze Detta Dei XL. Serie V. Memorie di Matemàtica Comments: No longer indexed Documents Indexed: 115 Publications (1980–1990) all top 5 Latest Issues 14, No. 2 (1990) 14, No. 1 (1990) 11, No. 1 (1987) 10, No. 1 (1986) 9 (1985) 8, No. 1 (1984) 7, No. 1 (1983) 7 (1983) 5 (1982) 4 (1980) all top 5 Authors 6 Marchionna, Clelia 5 Letta, Giorgio 5 Prouse, Giovanni 4 Bratti, Giuliano 4 Darbo, Gabriele 4 Zampieri, Giuseppe 3 Barsotti, Iacopo 3 Bottaro Aruffo, Ada 3 Brogini Bratti, Adriana 3 Citrini, Claudio 3 Fagnola, Franco 3 Fuchs, Aimé 3 Giuliano Antonini, Rita 3 Grandis, Marco 3 Parodi, Franco 3 Ricceri, Biagio 2 Amerio, Luigi 2 Arrighi, Gino 2 Braides, Andrea 2 Bui An Ton 2 Candeloro, Domenico 2 Dikranjan, Dikran N. 2 Lanza de Cristoforis, Massimo 2 Łukaszewicz, Grzegorz 2 Srinivasan, Sheshadri 2 Volpato Martinelli, Giuseppina 2 Zaretti, Anna 1 Ambrosio, Luigi 1 Bader, Laura 1 Balakrishnan, Uckath-Variyath 1 Barbieri Viale, Luca 1 Bella, Angelo 1 Bican, Ladislav 1 Carriero, Michele 1 Casolo, Carlo 1 Ciliberto, Ciro 1 Cioffi, Antonietta 1 D’Acunto, Berardino 1 De Luca, Marino 1 Decima, Gianni 1 Demichelis, Stefano 1 Edmunds, David Eric 1 Fort, Andrea 1 Frattarolo, Walter 1 Giarrusso, Ester 1 Haraux, Alain 1 Induráin, Esteban 1 Jabara, Enrico 1 Kenmochi, Nobuyuki 1 Kufner, Alois 1 Leaci, Antonio 1 Lipecki, Zbigniew 1 Lupacciolu, Guido 1 Maia, Maria Grazia 1 Marchioni, Giovanna 1 Marino, Antonio 1 Martinelli, Enzo 1 Mascolo, Elvira 1 Mora, Ferdinando 1 Naselli Ricceri, Ornella 1 Orsatti, Adalberto 1 Ôtani, Mitsuharu 1 Pacella, Filomena 1 Pallara, Diego 1 Pascali, Eduardo 1 Poletti, Mario 1 Pratelli, Luca 1 Renno, Pasquale 1 Rodinò, Nicola 1 Rolandi, Francesca 1 Salce, Luigi 1 Salvi, Rodolfo 1 Scolozzi, Donato 1 Scorza Dragoni, Giuseppe 1 Stagnaro, Ezio 1 Stefani, Oscar 1 Stoyanov, Luchezar N. 1 Sun, Jiong 1 Terenzi, Paolo 1 Tricarico, Mariarosaria 1 Volpato, Mario 1 Zacher, Giovanni 1 Zaidman, Samuel D. 1 Zanzotto, Pio Andrea 1 Zygmunt, Wojciech all top 5 Fields 29 Partial differential equations (35-XX) 14 Calculus of variations and optimal control; optimization (49-XX) 11 Functional analysis (46-XX) 11 Probability theory and stochastic processes (60-XX) 10 Measure and integration (28-XX) 10 Mechanics of deformable solids (74-XX) 9 Category theory; homological algebra (18-XX) 8 Real functions (26-XX) 7 Operator theory (47-XX) 6 General topology (54-XX) 6 Fluid mechanics (76-XX) 5 History and biography (01-XX) 5 Number theory (11-XX) 5 Algebraic geometry (14-XX) 5 Group theory and generalizations (20-XX) 5 Information and communication theory, circuits (94-XX) 4 Associative rings and algebras (16-XX) 3 Ordinary differential equations (34-XX) 3 Operations research, mathematical programming (90-XX) 3 Systems theory; control (93-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Topological groups, Lie groups (22-XX) 2 Functions of a complex variable (30-XX) 2 Several complex variables and analytic spaces (32-XX) 1 Mathematical logic and foundations (03-XX) 1 Commutative algebra (13-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Nonassociative rings and algebras (17-XX) 1 Special functions (33-XX) 1 Dynamical systems and ergodic theory (37-XX) 1 Difference and functional equations (39-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral equations (45-XX) 1 Geometry (51-XX) 1 Algebraic topology (55-XX) 1 Manifolds and cell complexes (57-XX) 1 Global analysis, analysis on manifolds (58-XX) 1 Numerical analysis (65-XX) 1 Classical thermodynamics, heat transfer (80-XX) 1 Quantum theory (81-XX) 1 Astronomy and astrophysics (85-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 40 Publications have been cited 167 times in 158 Documents Cited by ▼ Year ▼ Homogenization of some almost periodic coercive functional. Zbl 0582.49014Braides, Andrea 54 1985 Evolution equation for the eigenvalue problem for the Laplace operator with respect to an obstacle. Zbl 0729.35088Chobanov, G.; Marino, A.; Scolozzi, D. 17 1990 On the Vitali-Hahn-Saks and Dieudonné theorems. Zbl 0584.28003Candeloro, Domenico; Letta, Giorgio 9 1985 New lower semicontinuity results for integral functionals. Zbl 0642.49007Ambrosio, Luigi 9 1987 A homogenization theorem for weakly almost periodic functionals. Zbl 0611.49007Braides, Andrea 8 1986 Some new results on functions of bounded variation. Zbl 0723.49005Pallara, Diego 7 1990 On the structure of linearly compact rings and their dualities. Zbl 0562.16023Dikranjan, Dikran; Orsatti, Adalberto 6 1984 The general theory of densities. (Théorie générale des densités.) Zbl 0726.60004Fuchs, Aimé; Giuliano Antonini, Rita 6 1990 Existence theorems for nonlinear problems. Zbl 0643.47058Ricceri, Biagio 5 1987 Damping out of transient states for some semilinear, quasi-autonomous systems of hyperbolic type. Zbl 0556.35093Haraux, Alain 4 1983 Dualities over compact commutative rings. Zbl 0545.22004Stoyanov, Luchezar 3 1983 Fixed points of lower semicontinuous multifunctions and applications: Alternative and minimax theorems. Zbl 0586.47058Ricceri, Biagio 3 1985 A characterization of basic sequences in Banach spaces. Zbl 0618.46014Indurain, Esteban; Terenzi, Paolo 2 1986 Concrete representations for inverse and distributive exact categories. Zbl 0556.18004Grandis, Marco 2 1984 On some extensions of Scorza Dragoni’s theorem. Zbl 0599.28018Bottaro Aruffo, Ada 2 1985 Groups in which all subgroups are subnormal. Zbl 0608.20017Casolo, Carlo 2 1986 Extension of functions in weighted Sobolev spaces. Zbl 0723.46027Edmunds, D. E.; Kufner, A.; Sun, Jiong 2 1990 Nonlinear evolution equations governed by subdifferential operators with almost periodic time-dependence. Zbl 0623.34045Kenmochi, Nobuyuki; Otani, Mitsuharu 2 1986 On a mathematical model describing interaction between two classical gravitational fields. Zbl 0629.49003Prouse, Giovanni; Rolandi, Francesca; Zaretti, Anna 2 1987 A footnote to a conjecture in number theory. Zbl 0632.10042Srinivasan, Sheshadri 2 1986 On the classical solution of a single phase Stefan type problem for parabolic equations in planar domains with intersecting fixed and free boundaries. Zbl 0737.35157Bui An Ton 1 1990 Cohesive categories and measurable operators. Zbl 0745.46068Grandis, Marco 1 1990 Approximating measures and covers. Zbl 0558.28003Stefani, Oscar 1 1984 Algebraic hypersurfaces at parabolic points and relative Hessian. Zbl 0529.51017Ciliberto, Ciro 1 1980 On rational non-singular curves of degree 4 in \({\mathbb{P}}_ k^ 3\). Zbl 0545.14025Stagnaro, Ezio 1 1983 Differential equations of theta functions. Zbl 0546.14028Barsotti, Iacopo 1 1983 Some theorems on uniform boundedness. Zbl 0587.28006Candeloro, Domenico 1 1985 Solutions with lacunas for some linear partial differential equations. Zbl 0592.35083Lanza de Cristoforis, Massimo 1 1984 Sur la représentation intégrale des martingales d’un processus de comptage. (On the integral representation of martingales of a counting process). Zbl 0615.60045Fagnola, Franco; Letta, Giorgio 1 1986 On the number of H-sets in a Hausdorff space. Zbl 0616.54003Bella, Angelo 1 1986 A note on composition operators in Sobolev spaces and an extension of the chain rule. Zbl 0723.47027Lanza de Cristoforis, Massimo 1 1990 Functional estimations. Zbl 0723.49004Bottaro Aruffo, Ada 1 1990 Density and total density of the torsion part of a compact topological group. Zbl 0726.22003Dikranjan, Dikran N. 1 1990 Quelques remarques sur les intégrales stochastiques de processus non prévisibles. (Some remarks on stochastic integrals of non-predictible processes). Zbl 0732.60065Letta, Giorgio; Pratelli, Luca 1 1990 A footnote to a conjecture in number theory. II. Zbl 0632.10043Balakrishnan, Uckath-Variyath; Srinivasan, Sheshadri 1 1986 A uniqueness result in the calculus of variations. Zbl 0635.49003Mascolo, Elvira 1 1987 Local existence at the boundary of analytic solutions of partial differential equations with analytic coefficients. Zbl 0638.35007Zampieri, Giuseppe 1 1987 About a Fichera’s example concerning the Hartogs’ phenomenon. Zbl 0646.35007Bratti, Giuliano 1 1986 On the Scorza-Dragoni’s type property of the real function semicontinuous to the second variable. Zbl 0654.28006Zygmunt, Wojciech 1 1987 On the inequalities associated to a mode of Graffi for the motion of a mixture of two viscous incompressible fluids. Zbl 0661.76103Prouse, Giovanni; Zaretti, Anna 1 1987 Evolution equation for the eigenvalue problem for the Laplace operator with respect to an obstacle. Zbl 0729.35088Chobanov, G.; Marino, A.; Scolozzi, D. 17 1990 Some new results on functions of bounded variation. Zbl 0723.49005Pallara, Diego 7 1990 The general theory of densities. (Théorie générale des densités.) Zbl 0726.60004Fuchs, Aimé; Giuliano Antonini, Rita 6 1990 Extension of functions in weighted Sobolev spaces. Zbl 0723.46027Edmunds, D. E.; Kufner, A.; Sun, Jiong 2 1990 On the classical solution of a single phase Stefan type problem for parabolic equations in planar domains with intersecting fixed and free boundaries. Zbl 0737.35157Bui An Ton 1 1990 Cohesive categories and measurable operators. Zbl 0745.46068Grandis, Marco 1 1990 A note on composition operators in Sobolev spaces and an extension of the chain rule. Zbl 0723.47027Lanza de Cristoforis, Massimo 1 1990 Functional estimations. Zbl 0723.49004Bottaro Aruffo, Ada 1 1990 Density and total density of the torsion part of a compact topological group. Zbl 0726.22003Dikranjan, Dikran N. 1 1990 Quelques remarques sur les intégrales stochastiques de processus non prévisibles. (Some remarks on stochastic integrals of non-predictible processes). Zbl 0732.60065Letta, Giorgio; Pratelli, Luca 1 1990 New lower semicontinuity results for integral functionals. Zbl 0642.49007Ambrosio, Luigi 9 1987 Existence theorems for nonlinear problems. Zbl 0643.47058Ricceri, Biagio 5 1987 On a mathematical model describing interaction between two classical gravitational fields. Zbl 0629.49003Prouse, Giovanni; Rolandi, Francesca; Zaretti, Anna 2 1987 A uniqueness result in the calculus of variations. Zbl 0635.49003Mascolo, Elvira 1 1987 Local existence at the boundary of analytic solutions of partial differential equations with analytic coefficients. Zbl 0638.35007Zampieri, Giuseppe 1 1987 On the Scorza-Dragoni’s type property of the real function semicontinuous to the second variable. Zbl 0654.28006Zygmunt, Wojciech 1 1987 On the inequalities associated to a mode of Graffi for the motion of a mixture of two viscous incompressible fluids. Zbl 0661.76103Prouse, Giovanni; Zaretti, Anna 1 1987 A homogenization theorem for weakly almost periodic functionals. Zbl 0611.49007Braides, Andrea 8 1986 A characterization of basic sequences in Banach spaces. Zbl 0618.46014Indurain, Esteban; Terenzi, Paolo 2 1986 Groups in which all subgroups are subnormal. Zbl 0608.20017Casolo, Carlo 2 1986 Nonlinear evolution equations governed by subdifferential operators with almost periodic time-dependence. Zbl 0623.34045Kenmochi, Nobuyuki; Otani, Mitsuharu 2 1986 A footnote to a conjecture in number theory. Zbl 0632.10042Srinivasan, Sheshadri 2 1986 Sur la représentation intégrale des martingales d’un processus de comptage. (On the integral representation of martingales of a counting process). Zbl 0615.60045Fagnola, Franco; Letta, Giorgio 1 1986 On the number of H-sets in a Hausdorff space. Zbl 0616.54003Bella, Angelo 1 1986 A footnote to a conjecture in number theory. II. Zbl 0632.10043Balakrishnan, Uckath-Variyath; Srinivasan, Sheshadri 1 1986 About a Fichera’s example concerning the Hartogs’ phenomenon. Zbl 0646.35007Bratti, Giuliano 1 1986 Homogenization of some almost periodic coercive functional. Zbl 0582.49014Braides, Andrea 54 1985 On the Vitali-Hahn-Saks and Dieudonné theorems. Zbl 0584.28003Candeloro, Domenico; Letta, Giorgio 9 1985 Fixed points of lower semicontinuous multifunctions and applications: Alternative and minimax theorems. Zbl 0586.47058Ricceri, Biagio 3 1985 On some extensions of Scorza Dragoni’s theorem. Zbl 0599.28018Bottaro Aruffo, Ada 2 1985 Some theorems on uniform boundedness. Zbl 0587.28006Candeloro, Domenico 1 1985 On the structure of linearly compact rings and their dualities. Zbl 0562.16023Dikranjan, Dikran; Orsatti, Adalberto 6 1984 Concrete representations for inverse and distributive exact categories. Zbl 0556.18004Grandis, Marco 2 1984 Approximating measures and covers. Zbl 0558.28003Stefani, Oscar 1 1984 Solutions with lacunas for some linear partial differential equations. Zbl 0592.35083Lanza de Cristoforis, Massimo 1 1984 Damping out of transient states for some semilinear, quasi-autonomous systems of hyperbolic type. Zbl 0556.35093Haraux, Alain 4 1983 Dualities over compact commutative rings. Zbl 0545.22004Stoyanov, Luchezar 3 1983 On rational non-singular curves of degree 4 in \({\mathbb{P}}_ k^ 3\). Zbl 0545.14025Stagnaro, Ezio 1 1983 Differential equations of theta functions. Zbl 0546.14028Barsotti, Iacopo 1 1983 Algebraic hypersurfaces at parabolic points and relative Hessian. Zbl 0529.51017Ciliberto, Ciro 1 1980 all cited Publications top 5 cited Publications all top 5 Cited by 194 Authors 7 Braides, Andrea 6 Ambrosio, Luigi 6 Mandallena, Jean-Philippe 6 Ponte Castañeda, Pedro 5 Anza Hafsa, Omar 5 Babadjian, Jean-François 5 Canino, Annamaria 5 Fonseca, Irene 5 Neukamm, Stefan 5 Saccon, Claudio 4 Leaci, Antonio 4 Lopez-Pamies, Oscar 3 Boccuto, Antonio 3 Carriero, Michele 3 Chiadò Piat, Valeria 3 Defranceschi, Anneliese 3 Degiovanni, Marco 3 Dikranjan, Dikran N. 3 Grandis, Marco 3 Gregorio, Enrico 3 Haraux, Alain 3 Leoni, Giovanni 3 Michaille, Gérard 3 Mišík, Ladislav jun. 3 Müller, Stefan 3 Nnang, Hubert 3 Schäffner, Mathias 3 Tomarelli, Franco 3 Triantafyllidis, Nicolas 3 Zaretti, Anna 2 Bukor, József 2 Bulgarelli, Ulderico 2 Candeloro, Domenico 2 Cao, Xiaodong 2 Cerimele, Maria Mercede 2 Cherednichenko, Kirill D. 2 De Arcangelis, Riccardo 2 De Lucia, Paolo 2 Groli, Alessandro 2 Jesenko, Martin 2 Licht, Christian 2 Marino, Antonio 2 Menini, Claudia 2 Michel, Jean-Claude 2 Millot, Vincent 2 Orsatti, Adalberto 2 Paroni, Roberto 2 Plans, Antonio 2 Santos, Pedro Miguel 2 Schmidt, Bernd 2 Sleziak, Martin 2 Tanigawa, Yoshio 2 Tosques, Mario 2 Tóth, János T. 2 Zhai, Wenguang 1 Allaire, Grégoire 1 Aloui, Faouzia 1 Alvarez, Felipe 1 Ansini, Nadia 1 Aubert, Philippe 1 Baía, Margarida 1 Barchiesi, Marco 1 Bardaro, Carlo 1 Barles, Guy 1 Barone-Netto, Angelo 1 Ben Hassen, Imen 1 Bertirotti, Silvia 1 Bhattacharya, Kaushik 1 Borisovich, Yuriĭ Grigor’evich 1 Bottacin, Francesco 1 Bottaro Aruffo, Ada 1 Bratti, Giuliano 1 Cherdantsev, Mikhail 1 Christowiak, Fabian 1 Chua, Seng-Kee 1 Cieutat, Philippe 1 Clozeau, Nicolas 1 Colombo, Giovanni 1 Conca, Carlos 1 Conti, Sergio 1 Craighero, Pier Carlo 1 Cubiotti, Paolo 1 Dal Maso, Gianni 1 Dalibard, Anne-Laure 1 Dalla Riva, Matteo 1 D’Ancona, Piero 1 D’Andrea, Anna Bruna 1 de Giovanni, Francesco 1 de Oliveira Cesar, Mauro 1 De Poi, Pietro 1 Di Bella, Beatrice 1 Dimitriou, Xenofon 1 Dimov, Georgi D. 1 Drábek, Pavel 1 Drivaliaris, Dimosthenis 1 Duerinckx, Mitia 1 Fechner, Włodzimierz 1 Ferreira, Rita 1 Frigon, Marlène 1 Furuya, Jun ...and 94 more Authors all top 5 Cited in 67 Journals 14 Archive for Rational Mechanics and Analysis 11 Rendiconti del Seminario Matematico della Università di Padova 9 Journal of Mathematical Analysis and Applications 8 Annali di Matematica Pura ed Applicata. Serie Quarta 7 Journal of the Mechanics and Physics of Solids 7 Calculus of Variations and Partial Differential Equations 6 Nonlinear Analysis. Theory, Methods & Applications 5 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 5 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 4 Archiv der Mathematik 4 Journal of Differential Equations 4 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 3 Rendiconti del Seminario Matemàtico e Fisico di Milano 2 Annali della Scuola Normale Superiore di Pisa. Classe di Scienze. Serie IV 2 Applied Mathematics and Computation 2 Applied Mathematics and Optimization 2 Cahiers de Topologie et Géométrie Différentielle Catégoriques 2 Information Sciences 2 Journal of Algebra 2 Kybernetika 2 Proceedings of the American Mathematical Society 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Transactions of the American Mathematical Society 2 Annales de la Faculté des Sciences de Toulouse. Série V. Mathématiques 2 Acta Applicandae Mathematicae 2 Journal de Mathématiques Pures et Appliquées. Neuvième Série 2 SIAM Journal on Mathematical Analysis 2 Annales Mathématiques Blaise Pascal 2 NoDEA. Nonlinear Differential Equations and Applications 2 Bollettino dell’Unione Matematica Italiana 1 Journal d’Analyse Mathématique 1 Acta Mathematica 1 Czechoslovak Mathematical Journal 1 Functiones et Approximatio. Commentarii Mathematici 1 Journal of Functional Analysis 1 Journal of Optimization Theory and Applications 1 Journal of Soviet Mathematics 1 Manuscripta Mathematica 1 Mathematische Nachrichten 1 Mathematische Zeitschrift 1 Proceedings of the Edinburgh Mathematical Society. Series II 1 Proceedings of the Japan Academy. Series A 1 Zeitschrift für Analysis und ihre Anwendungen 1 RAIRO. Modélisation Mathématique et Analyse Numérique 1 Computational Mechanics 1 Applied Mathematics Letters 1 Dynamics and Stability of Systems 1 Forum Mathematicum 1 Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Serie IX. Rendiconti Lincei. Matematica e Applicazioni 1 Japan Journal of Industrial and Applied Mathematics 1 M\(^3\)AS. Mathematical Models & Methods in Applied Sciences 1 Godishnik na Sofiĭskiya Universitet “Sv. Kliment Okhridski”. Fakultet po Matematika i Informatika 1 Journal of Elasticity 1 Annales de la Faculté des Sciences de Toulouse. Mathématiques. Série VI 1 Proceedings of the Royal Society of London. Series A. Mathematical, Physical and Engineering Sciences 1 M2AN. Mathematical Modelling and Numerical Analysis. ESAIM, European Series in Applied and Industrial Mathematics 1 Nihonkai Mathematical Journal 1 Comptes Rendus. Mathématique. Académie des Sciences, Paris 1 Milan Journal of Mathematics 1 Mediterranean Journal of Mathematics 1 Oberwolfach Reports 1 Complex Variables and Elliptic Equations 1 Acta Mathematica Universitatis Ostraviensis 1 Advances in Calculus of Variations 1 Science China. Mathematics 1 Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica 1 Advances in Nonlinear Analysis all top 5 Cited in 36 Fields 53 Calculus of variations and optimal control; optimization (49-XX) 45 Partial differential equations (35-XX) 41 Mechanics of deformable solids (74-XX) 16 Measure and integration (28-XX) 15 Functional analysis (46-XX) 11 Operator theory (47-XX) 9 Global analysis, analysis on manifolds (58-XX) 7 Ordinary differential equations (34-XX) 6 Number theory (11-XX) 6 Associative rings and algebras (16-XX) 6 Category theory; homological algebra (18-XX) 5 Dynamical systems and ergodic theory (37-XX) 5 General topology (54-XX) 5 Probability theory and stochastic processes (60-XX) 5 Fluid mechanics (76-XX) 4 History and biography (01-XX) 4 Real functions (26-XX) 3 Algebraic geometry (14-XX) 2 Commutative algebra (13-XX) 2 Group theory and generalizations (20-XX) 2 Difference and functional equations (39-XX) 2 Convex and discrete geometry (52-XX) 2 Computer science (68-XX) 2 Mechanics of particles and systems (70-XX) 2 Astronomy and astrophysics (85-XX) 2 Operations research, mathematical programming (90-XX) 2 Information and communication theory, circuits (94-XX) 1 General and overarching topics; collections (00-XX) 1 Order, lattices, ordered algebraic structures (06-XX) 1 Topological groups, Lie groups (22-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral equations (45-XX) 1 Differential geometry (53-XX) 1 Algebraic topology (55-XX) 1 Classical thermodynamics, heat transfer (80-XX) Citations by Year