Xu, Kaijie; Pedrycz, Witold; Li, Zhiwu Granular computing: an augmented scheme of degranulation through a modified partition matrix. (English) Zbl 1522.68586 Fuzzy Sets Syst. 440, 131-148 (2022). MSC: 68T37 PDFBibTeX XMLCite \textit{K. Xu} et al., Fuzzy Sets Syst. 440, 131--148 (2022; Zbl 1522.68586) Full Text: DOI arXiv
Kutnenko, O. A. Computational complexity of two problems of cognitive data analysis. (Russian. English summary) Zbl 1506.68115 Diskretn. Anal. Issled. Oper. 29, No. 1, 18-32 (2022). MSC: 68T09 62H30 68Q17 PDFBibTeX XMLCite \textit{O. A. Kutnenko}, Diskretn. Anal. Issled. Oper. 29, No. 1, 18--32 (2022; Zbl 1506.68115) Full Text: DOI MNR
Jagiełło, Adrianna; Lisowski, Piotr; Urban, Roman Type-2 fuzzy sets and Newton’s fuzzy potential in an algorithm of classification objects of a conceptual space. (English) Zbl 1515.68316 J. Logic Lang. Inf. 31, No. 3, 389-408 (2022). MSC: 68T30 68T37 68W05 PDFBibTeX XMLCite \textit{A. Jagiełło} et al., J. Logic Lang. Inf. 31, No. 3, 389--408 (2022; Zbl 1515.68316) Full Text: DOI
Mormann, Thomas Prototypes, poles, and tessellations: towards a topological theory of conceptual spaces. (English) Zbl 07795300 Synthese 199, No. 1-2, 3675-3710 (2021). MSC: 54H99 54H30 PDFBibTeX XMLCite \textit{T. Mormann}, Synthese 199, No. 1--2, 3675--3710 (2021; Zbl 07795300) Full Text: DOI
Li, Shunyong; Cui, Wenxiu; Jing, Pengfei A weighted clustering algorithm based on information entropy. (Chinese. English summary) Zbl 1474.62236 J. Yunnan Minzu Univ., Nat. Sci. 29, No. 6, 568-576 (2020). MSC: 62H30 68T10 94A17 PDFBibTeX XMLCite \textit{S. Li} et al., J. Yunnan Minzu Univ., Nat. Sci. 29, No. 6, 568--576 (2020; Zbl 1474.62236) Full Text: DOI
del Barrio, E.; Cuesta-Albertos, J. A.; Matrán, C.; Mayo-Íscar, A. Robust clustering tools based on optimal transportation. (English) Zbl 1430.62130 Stat. Comput. 29, No. 1, 139-160 (2019). MSC: 62H30 62G35 62G20 62P10 PDFBibTeX XMLCite \textit{E. del Barrio} et al., Stat. Comput. 29, No. 1, 139--160 (2019; Zbl 1430.62130) Full Text: DOI arXiv
Jankowski, Norbert Comparison of prototype selection algorithms used in construction of neural networks learned by SVD. (English) Zbl 1493.68302 Int. J. Appl. Math. Comput. Sci. 28, No. 4, 719-733 (2019). MSC: 68T05 62H30 PDFBibTeX XMLCite \textit{N. Jankowski}, Int. J. Appl. Math. Comput. Sci. 28, No. 4, 719--733 (2019; Zbl 1493.68302) Full Text: DOI
Akay, Özlem; Yüksel, Güzin Clustering the mixed panel dataset using Gower’s distance and k-prototypes algorithms. (English) Zbl 07550183 Commun. Stat., Simulation Comput. 47, No. 10, 3031-3041 (2018). MSC: 62H30 91C20 PDFBibTeX XMLCite \textit{Ö. Akay} and \textit{G. Yüksel}, Commun. Stat., Simulation Comput. 47, No. 10, 3031--3041 (2018; Zbl 07550183) Full Text: DOI
Sangam, Ravi Sankar; Om, Hari An equi-biased \(k\)-prototypes algorithm for clustering mixed-type data. (English) Zbl 1397.62230 Sādhanā 43, No. 3, Paper No. 37, 12 p. (2018). MSC: 62H30 PDFBibTeX XMLCite \textit{R. S. Sangam} and \textit{H. Om}, Sādhanā 43, No. 3, Paper No. 37, 12 p. (2018; Zbl 1397.62230) Full Text: DOI
Dutta, Soma; Wasilewski, Piotr Dialogue in hierarchical learning of concept using prototypes and counterexamples. (English) Zbl 1396.68121 Fundam. Inform. 162, No. 1, 17-36 (2018). MSC: 68T37 68T05 PDFBibTeX XMLCite \textit{S. Dutta} and \textit{P. Wasilewski}, Fundam. Inform. 162, No. 1, 17--36 (2018; Zbl 1396.68121) Full Text: DOI
Zhambaa, S.; Kasatkina, T. V.; Bubenchikov, A. M. Application of Kufarev method to problem of subsoil waters movement under hydraulic engineering constructions. (Russian. English summary) Zbl 07607597 Vestn. Tomsk. Gos. Univ., Mat. Mekh. 2017, No. 47, 15-21 (2017). MSC: 65-XX 76-XX PDFBibTeX XMLCite \textit{S. Zhambaa} et al., Vestn. Tomsk. Gos. Univ., Mat. Mekh. 2017, No. 47, 15--21 (2017; Zbl 07607597) Full Text: DOI MNR
Ragozini, G.; Palumbo, F.; D’Esposito, M. R. Archetypal analysis for data-driven prototype identification. (English) Zbl 07260698 Stat. Anal. Data Min. 10, No. 1, 6-20 (2017). MSC: 62-XX 68-XX PDFBibTeX XMLCite \textit{G. Ragozini} et al., Stat. Anal. Data Min. 10, No. 1, 6--20 (2017; Zbl 07260698) Full Text: DOI
Kim, Byoungwook A fast k-prototypes algorithm using partial distance computation. (English) Zbl 1428.62280 Symmetry 9, No. 4, Paper No. 58, 10 p. (2017). MSC: 62H30 PDFBibTeX XMLCite \textit{B. Kim}, Symmetry 9, No. 4, Paper No. 58, 10 p. (2017; Zbl 1428.62280) Full Text: DOI
Ougiaroglou, Stefanos; Evangelidis, Georgios Efficient editing and data abstraction by finding homogeneous clusters. (English) Zbl 1356.68169 Ann. Math. Artif. Intell. 76, No. 3-4, 327-349 (2016). MSC: 68T05 62H30 68T10 PDFBibTeX XMLCite \textit{S. Ougiaroglou} and \textit{G. Evangelidis}, Ann. Math. Artif. Intell. 76, No. 3--4, 327--349 (2016; Zbl 1356.68169) Full Text: DOI
Mateu, Jorge; Schoenberg, Frederic P.; Diez, David M.; González, Jonatan A.; Lu, Weipeng On measures of dissimilarity between point patterns: classification based on prototypes and multidimensional scaling. (English) Zbl 1310.62117 Biom. J. 57, No. 2, 340-358 (2015). MSC: 62P10 62P25 PDFBibTeX XMLCite \textit{J. Mateu} et al., Biom. J. 57, No. 2, 340--358 (2015; Zbl 1310.62117) Full Text: DOI
Simani, Silvio Residual generator fuzzy identification for automotive diesel engine fault diagnosis. (English) Zbl 1282.93162 Int. J. Appl. Math. Comput. Sci. 23, No. 2, 419-438 (2013). MSC: 93C42 93E12 93C95 PDFBibTeX XMLCite \textit{S. Simani}, Int. J. Appl. Math. Comput. Sci. 23, No. 2, 419--438 (2013; Zbl 1282.93162) Full Text: DOI
Liang, Jiye; Zhao, Xingwang; Li, Deyu; Cao, Fuyuan; Dang, Chuangyin Determining the number of clusters using information entropy for mixed data. (English) Zbl 1234.68343 Pattern Recognition 45, No. 6, 2251-2265 (2012). MSC: 68T05 62H30 PDFBibTeX XMLCite \textit{J. Liang} et al., Pattern Recognition 45, No. 6, 2251--2265 (2012; Zbl 1234.68343) Full Text: DOI
Winkler, Roland; Klawonn, Frank; Kruse, Rudolf M-estimator induced fuzzy clustering algorithms. (English) Zbl 1254.62076 Proceedings of the 7th conference of the European Society for Fuzzy Logic and Technology (EUSFLAT-2011) and 17th annual LFA meeting, Aix-Les-Bains, France, July 18–22, 2011. Amsterdam: Atlantis Press (ISBN 9978-90-78677-00-0). Paper No. 45, 298-304 (2011). MSC: 62H30 62H86 PDFBibTeX XMLCite \textit{R. Winkler} et al., in: Proceedings of the 7th conference of the European Society for Fuzzy Logic and Technology (EUSFLAT-2011) and 17th annual LFA meeting, Aix-Les-Bains, France, July 18--22, 2011. Amsterdam: Atlantis Press. Paper No. 45, 298--304 (2011; Zbl 1254.62076) Full Text: DOI
Winkler, Roland; Klawonn, Frank; Kruse, Rudolf Fuzzy clustering with polynomial fuzzifier function in connection with M-estimators. (English) Zbl 1208.62105 Appl. Comput. Math. 10, No. 1, 146-146 (2011). MSC: 62H30 62H86 65C60 PDFBibTeX XMLCite \textit{R. Winkler} et al., Appl. Comput. Math. 10, No. 1, 146--146 (2011; Zbl 1208.62105) Full Text: Link
Chen, Wei; Wang, Lei; Jiang, Zi-Yun \(K\)-prototypes based clustering algorithm for data mixed with numeric and categorical values. (Chinese. English summary) Zbl 1246.68192 J. Comput. Appl. 30, No. 8, 2003-2005 (2010). MSC: 68T10 68W05 PDFBibTeX XMLCite \textit{W. Chen} et al., J. Comput. Appl. 30, No. 8, 2003--2005 (2010; Zbl 1246.68192) Full Text: DOI
Tabata, Kenji; Sato, Maiko; Kudo, Mineichi Data compression by volume prototypes for streaming data. (English) Zbl 1207.68135 Pattern Recognition 43, No. 9, 3162-3176 (2010). MSC: 68P30 68T10 68W05 PDFBibTeX XMLCite \textit{K. Tabata} et al., Pattern Recognition 43, No. 9, 3162--3176 (2010; Zbl 1207.68135) Full Text: DOI
Song, Xiao; Zhang, Lin; Gong, Guang-Hong; Di, Yan-Qiang; Yu, Peng-Fei Digital product data exchange in semantic service-oriented architecture. (English) Zbl 1186.68537 COMPEL 28, No. 6, 1560-1578 (2009). MSC: 68U35 68N99 68M11 PDFBibTeX XMLCite \textit{X. Song} et al., COMPEL 28, No. 6, 1560--1578 (2009; Zbl 1186.68537) Full Text: DOI
Zhang, Ming; Nie, Hong; Wei, Xiao-Hui; Qian, Xiaomei; Zhou, Enzhi Modeling and simulation of aircraft anti-skid braking and steering using co-simulation method. (English) Zbl 1183.74178 COMPEL 28, No. 6, 1471-1488 (2009). MSC: 74M10 PDFBibTeX XMLCite \textit{M. Zhang} et al., COMPEL 28, No. 6, 1471--1488 (2009; Zbl 1183.74178) Full Text: DOI
Casini, Giovanni; Hosni, Hykel A note on cumulative stereotypical reasoning. (English) Zbl 1245.03045 Sossai, Claudio (ed.) et al., Symbolic and quantitative approaches to reasoning with uncertainty. 10th European conference, ECSQARU 2009, Verona, Italy, July 1–3, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-02905-9/pbk). Lecture Notes in Computer Science 5590. Lecture Notes in Artificial Intelligence, 590-601 (2009). MSC: 03B60 68T27 PDFBibTeX XMLCite \textit{G. Casini} and \textit{H. Hosni}, Lect. Notes Comput. Sci. 5590, 590--601 (2009; Zbl 1245.03045) Full Text: DOI
Zhao, Lijiang Initial points chosen in mixture data clustering algorithm improvement based on genetic. (Chinese. English summary) Zbl 1199.68259 J. Guangxi Norm. Univ., Nat. Sci. 26, No. 3, 194-197 (2008). MSC: 68T05 68T10 PDFBibTeX XMLCite \textit{L. Zhao}, J. Guangxi Norm. Univ., Nat. Sci. 26, No. 3, 194--197 (2008; Zbl 1199.68259)
Pedrycz, Witold; Rai, Partab Collaborative clustering with the use of Fuzzy C-means and its quantification. (English) Zbl 1186.68385 Fuzzy Sets Syst. 159, No. 18, 2399-2427 (2008). MSC: 68T05 PDFBibTeX XMLCite \textit{W. Pedrycz} and \textit{P. Rai}, Fuzzy Sets Syst. 159, No. 18, 2399--2427 (2008; Zbl 1186.68385) Full Text: DOI
Foo, Norman; Low, Boon Toh A note on prototypes, convexity and fuzzy sets. (English) Zbl 1159.68037 Stud. Log. 90, No. 1, 125-137 (2008). MSC: 68T30 03A05 68T37 PDFBibTeX XMLCite \textit{N. Foo} and \textit{B. T. Low}, Stud. Log. 90, No. 1, 125--137 (2008; Zbl 1159.68037) Full Text: DOI
Azrieli, Yaron; Lehrer, Ehud Categorization generated by extended prototypes – an axiomatic approach. (English) Zbl 1122.03300 J. Math. Psychol. 51, No. 1, 14-28 (2007). MSC: 03A05 68T30 91E10 PDFBibTeX XMLCite \textit{Y. Azrieli} and \textit{E. Lehrer}, J. Math. Psychol. 51, No. 1, 14--28 (2007; Zbl 1122.03300) Full Text: DOI
Chang, Fu; Lin, Chin-Chin; Lu, Chi-Jen Adaptive prototype learning algorithms: theoretical and experimental studies. (English) Zbl 1222.68164 J. Mach. Learn. Res. 7, 2125-2148 (2006). MSC: 68T05 PDFBibTeX XMLCite \textit{F. Chang} et al., J. Mach. Learn. Res. 7, 2125--2148 (2006; Zbl 1222.68164) Full Text: Link
Fan, Huiyuan; Lampinen, Jouni; Levy, Yeshayahou An easy-to-implement differential evolution approach for multi-objective optimizations. (English) Zbl 1182.76941 Eng. Comput. (Bradf.) 23, No. 2, 124-138 (2006). MSC: 76N25 76M25 PDFBibTeX XMLCite \textit{H. Fan} et al., Eng. Comput. (Bradf.) 23, No. 2, 124--138 (2006; Zbl 1182.76941) Full Text: DOI
Vijaya, P. A.; Murty, M. Narasimha; Subramanian, D. K. Efficient bottom-up hybrid hierarchical clustering techniques for protein sequence classification. (English) Zbl 1103.68789 Pattern Recognition 39, No. 12, 2344-2355 (2006). MSC: 68T10 PDFBibTeX XMLCite \textit{P. A. Vijaya} et al., Pattern Recognition 39, No. 12, 2344--2355 (2006; Zbl 1103.68789) Full Text: DOI
Randon, N. J.; Lawry, J. Classification and query evaluation using modelling with words. (English) Zbl 1093.68108 Inf. Sci. 176, No. 4, 438-464 (2006). MSC: 68T30 68T05 68T50 PDFBibTeX XMLCite \textit{N. J. Randon} and \textit{J. Lawry}, Inf. Sci. 176, No. 4, 438--464 (2006; Zbl 1093.68108) Full Text: DOI
Seaborn, Matthew; Hepplewhite, Lee; Stonham, John Fuzzy colour category map for the measurement of colour similarity and dissimilarity. (English) Zbl 1079.68639 Pattern Recognition 38, No. 2, 165-177 (2005). MSC: 68U10 PDFBibTeX XMLCite \textit{M. Seaborn} et al., Pattern Recognition 38, No. 2, 165--177 (2005; Zbl 1079.68639) Full Text: DOI
Qin, A. K.; Suganthan, P. N. Robust growing neural gas algorithm with application in cluster analysis. (English) Zbl 1079.68596 Neural Netw. 17, No. 8-9, 1135-1148 (2004). MSC: 68T05 68T10 68W05 62H30 PDFBibTeX XMLCite \textit{A. K. Qin} and \textit{P. N. Suganthan}, Neural Netw. 17, No. 8--9, 1135--1148 (2004; Zbl 1079.68596) Full Text: DOI
Pötzelberger, Klaus Asymptotic quantization of probability distributions. (English) Zbl 1049.60012 Anal. Theory Appl. 19, No. 4, 355-364 (2003). MSC: 60D05 62H30 PDFBibTeX XMLCite \textit{K. Pötzelberger}, Anal. Theory Appl. 19, No. 4, 355--364 (2003; Zbl 1049.60012) Full Text: DOI
Georgatos, Konstantinos On indistinguishability and prototypes. (English) Zbl 1142.03363 Log. J. IGPL 11, No. 5, 531-545 (2003). MSC: 03E20 08A30 68T30 PDFBibTeX XMLCite \textit{K. Georgatos}, Log. J. IGPL 11, No. 5, 531--545 (2003; Zbl 1142.03363) Full Text: DOI
Kim, Sang-Woon; Oommen, B. J. Enhancing prototype reduction schemes with LVQ3-type algorithms. (English) Zbl 1028.68148 Pattern Recognition 36, No. 5, 1083-1093 (2003). MSC: 68T10 68T05 PDFBibTeX XMLCite \textit{S.-W. Kim} and \textit{B. J. Oommen}, Pattern Recognition 36, No. 5, 1083--1093 (2003; Zbl 1028.68148) Full Text: DOI
Bargiela, Andrzej; Pedrycz, Witold; Hirota, Kaoru Data granulation through optimization of similarity measure. (English) Zbl 1151.93387 Arch. Control Sci. 12, No. 4, 469-491 (2002). MSC: 93C83 68T10 PDFBibTeX XMLCite \textit{A. Bargiela} et al., Arch. Control Sci. 12, No. 4, 469--491 (2002; Zbl 1151.93387)
Zheng, Yongai; Liu, Zengrong; Liu, Yurong Travelling wave solution for sine-Gordon prototypes. (English) Zbl 1069.39500 Int. J. Nonlinear Sci. Numer. Simul. 2, No. 1, 73-77 (2001). MSC: 39A12 65M06 35Q53 35Q51 37K40 PDFBibTeX XMLCite \textit{Y. Zheng} et al., Int. J. Nonlinear Sci. Numer. Simul. 2, No. 1, 73--77 (2001; Zbl 1069.39500) Full Text: DOI
Mark, David M.; Skupin, André; Smith, Barry Features, objects, and other things: Ontological distinctions in the geographic domain. (English) Zbl 1042.68770 Montello, Daniel R. (ed.), Spatial information theory. Foundations of geographic information science. 5th international conference, COSIT 2001, Morro Bay, CA, USA, September 19–23, 2001. Proceedings. Berlin: Springer (ISBN 3-540-42613-2). Lect. Notes Comput. Sci. 2205, 489-502 (2001). MSC: 68U99 68U05 68U35 PDFBibTeX XMLCite \textit{D. M. Mark} et al., Lect. Notes Comput. Sci. 2205, 489--502 (2001; Zbl 1042.68770) Full Text: Link
Aisbett, Janet; Gibbon, Greg A general formulation of conceptual spaces as a meso level representation. (English) Zbl 0992.68195 Artif. Intell. 133, No. 1-2, 189-232 (2001). MSC: 68T30 PDFBibTeX XMLCite \textit{J. Aisbett} and \textit{G. Gibbon}, Artif. Intell. 133, No. 1--2, 189--232 (2001; Zbl 0992.68195) Full Text: DOI
Genero, Marcela; Olivas, José; Piattini, Mario; Romero, Francisco Using metrics to predict OO information systems maintainability. (English) Zbl 0980.68876 Dittrich, Klaus R. (ed.) et al., Advanced information systems engineering. 13th international conference, CAiSE 2001, Interlaken, Switzerland, June 4-8, 2001. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 2068, 388-401 (2001). MSC: 68U99 68U35 PDFBibTeX XMLCite \textit{M. Genero} et al., Lect. Notes Comput. Sci. 2068, 388--401 (2001; Zbl 0980.68876) Full Text: Link
Connell, Scott D.; Jain, Anil K. Template-based online character recognition. (English) Zbl 0970.68756 Pattern Recognition 34, No. 1, 1-14 (2001). MSC: 68U99 68T10 PDFBibTeX XMLCite \textit{S. D. Connell} and \textit{A. K. Jain}, Pattern Recognition 34, No. 1, 1--14 (2001; Zbl 0970.68756) Full Text: DOI
Bojowald, Martin; Strobl, Thomas Group theoretical quantization and the example of a phase space \(S^1\times{\mathbb{R}}^+\). (English) Zbl 0987.81044 J. Math. Phys. 41, No. 5, 2537-2567 (2000). MSC: 81S10 53D20 53D50 81R05 83C45 PDFBibTeX XMLCite \textit{M. Bojowald} and \textit{T. Strobl}, J. Math. Phys. 41, No. 5, 2537--2567 (2000; Zbl 0987.81044) Full Text: DOI arXiv
Park, DongGook; Boyd, Colin; Moon, Sang-Jae Forward secrecy and its application to future mobile communications security. (English) Zbl 0969.94020 Imai, Hideki (ed.) et al., Public key cryptography. 3rd international workshop on Practice and theory in public key cryptosystems, PKC 2000, Melbourne, Victoria, Australia, January 18-20, 2000. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 1751, 433-445 (2000). MSC: 94A60 68P25 PDFBibTeX XMLCite \textit{D. Park} et al., Lect. Notes Comput. Sci. 1751, 433--445 (2000; Zbl 0969.94020)
Holly, Jan E. Prototypes for definable subsets of algebraically closed valued fields. (English) Zbl 0899.03027 J. Symb. Log. 62, No. 4, 1093-1141 (1997). Reviewer: T.Pheidas (Iraklion) MSC: 03C60 12L12 12J10 PDFBibTeX XMLCite \textit{J. E. Holly}, J. Symb. Log. 62, No. 4, 1093--1141 (1997; Zbl 0899.03027) Full Text: DOI
Flemming, Ulrich (ed.); van Wyk, Skip (ed.) CAAD Futures ’93. Proceedings of the 5th International Conference on Computer-aided architectural design futures. Pittsburgh, PA, USA, 7-10 July, 1993. (English) Zbl 0799.68012 Amsterdam: North-Holland. XVII, 565 p. Dfl. 290.00; US $ 165.75 /hc (1993). MSC: 68-06 00B25 PDFBibTeX XMLCite \textit{U. Flemming} (ed.) and \textit{S. van Wyk} (ed.), CAAD Futures '93. Proceedings of the 5th International Conference on Computer-aided architectural design futures. Pittsburgh, PA, USA, 7-10 July, 1993. Amsterdam: North-Holland (1993; Zbl 0799.68012)
Gärdenfors, Peter Frameworks for properties: Possible worlds vs. conceptual spaces. (English) Zbl 0726.03020 Acta Philos. Fenn. 49, 383-407 (1990). Reviewer: D.Makinson (Ville d’Avray) MSC: 03B60 68T27 03A05 PDFBibTeX XMLCite \textit{P. Gärdenfors}, Acta Philos. Fenn. 49, 383--407 (1990; Zbl 0726.03020)
Lenart, Cristian A classification algorithm for ellipsoid form clusters. (English) Zbl 0743.62053 Prepr., ”Babeș-Bolyai” Univ., Fac. Math. Phys., Res. Semin. 1989, No. 9, 93-102 (1989). MSC: 62H30 PDFBibTeX XMLCite \textit{C. Lenart}, Prepr., ``Babeș-Bolyai'' Univ., Fac. Math. Phys., Res. Semin. 1989, No. 9, 93--102 (1989; Zbl 0743.62053)
Dalton, R. E. A dissimilarity criterion for sequential fuzzy ISODATA. (English) Zbl 0606.62061 Fuzzy Sets Syst. 21, 115-118 (1987). MSC: 62H30 PDFBibTeX XMLCite \textit{R. E. Dalton}, Fuzzy Sets Syst. 21, 115--118 (1987; Zbl 0606.62061) Full Text: DOI
Sklansky, Jack; Michelotti, Leo Locally trained piecewise linear classifiers. (English) Zbl 0443.62046 IEEE Trans. Pattern Anal. Mach. Intell. 2, 101-111 (1980). MSC: 62H30 62C10 PDFBibTeX XMLCite \textit{J. Sklansky} and \textit{L. Michelotti}, IEEE Trans. Pattern Anal. Mach. Intell. 2, 101--111 (1980; Zbl 0443.62046) Full Text: DOI