Media type: E-Article Title: Fuzziness is useful Contributor: MUKAIDONO, Masao imprint: Japan Society for Fuzzy Theory and Intelligent Informatics, 1990 Published in: Journal of Japan Society for Fuzzy Theory and Systems Language: English DOI: 10.3156/jfuzzy.2.3_364 ISSN: 0915-647X; 2432-9932 Origination: Footnote: Access State: Open Access