Advances in fuzzy set theory and applications - Gupta, Madan M.; Ragade, Rammohan K., 1942-; Yager, Ronald R., 1941- (Amsterdam ; New York : North-Holland Pub. Co. ; New York : sole distributors for the USA and Canada, Elsevier North-Holland, 1979)
Bibliography: p. 621-744.
Keywords: Set theory; System analysis; Mathematical models