Zimmermann, H J. Fuzzy Set Theory and its Applications / By H J Zimmermann. - 4th ed. - New Delhi : Springer-Verlag, 2001. - 514p. ; 00 cm. ISBN: 8181285190 Subjects--Topical Terms: FUZZT SETS ; MATHEMATICAL LOGIC ; MATHEMATICS. Dewey Class. No.: 511.322 / ZIM