References
- ANSI (American National Standards Institute, Inc.) , 1986 , American National Standard for Information Systems—Database Language—SQL ( New York , NY : ANSI ).
- ARONOKF , S. , 1989 , Geographic Information Systems : A management Perspective ( Ottawa : WDL Publications ).
- BURROUGH , P. A. , 1989 , Fuzzy mathematical methods for soil survey and land evaluation . Journal of Soil Science , 40 , 477 – 492 .
- CODD , E. F. , 1970 , A relational model of data for large shared data banks . ACM Communication , 13 , 377 – 397 .
- FRANK , A. V. , and MARK , D. M. , 1991 , Language issues for GIS . In Geographical Information Systems: Principles and Applications edited by D. J. Maguire ( Essex , England : Longman Scientific and Technical ), pp. 000 .
- GAHEGAN , M. N. , and ROBERTS , S. A. , 1988 , An intelligent, object-oriented geographical information system . Internalional Journal of Geographical Information System , 2 , 101 — 110 .
- KACPRZYK , J. , and ZIOLKOWSKI , A. , 1986 , Database queries with fuzzy linguistic quantifiers . I.E.E.E. Transactions on Systems, Man, and Cybernetics , SMC-16 , 377 – 397 .
- KERNIGHAN , B. W. , and PIKK , R. , 1984 , The UNIX Programming Environment ( Englewood Cliffs , NJ : Prentice-Hall ).
- KOLUAS , V. J. , and VOLIOTIS , A. , 1991 , Fuzzy reasoning in the development of geographical information systems FRSIS : a prototype soil information system with fuzzy retrieval capabilities . International Journal of Geographical Information Systems , 5 , 209 – 223 .
- KORTH , H. F. , and SILBERSCHATZ , A. , 1986 , Database System Concepts () , Second Edition ( New York : McGraw-Hill ).
- NCGIA (NATIONAL CENTER FOR GEOGRAPHIC INFORMATION AND ANALYSIS) , 1989 , The research plan of the National Center for Geographic Information and Analysis . International Journal of Geographical Information Systems , 3 , 117 – 136 .
- TAHANI , V. , 1977 , A conceptual framework for fuzzy query processing—a step towards very intelligent database systems . Information Processing and Managment , 13 , 289 – 303 .
- TAKAHASHI , Y. , 1991 , A fuzzy query language for relational databases . I.E.E.E. Transactions on Systems, Man, and Cybernetics , 21 , 1576 – 1579 .
- TSICHRITZIS , D. C. , and LOCHOVSKY , F. H. , 1982 , Data Models ( Englewood Cliffs , NJ : Prentice-Hall ).
- ZADEH , L. A. , 1965 , Fuzzy sets . Information and Control , 8 , 338 – 353 .
- ZADEH , L. A. , 1978 , PRUF—a meaning representation language for natural languages . International Journal of Man-Machine Studies , 10 , 395 – 460 .