Negoiţă, C. V., & Ralescu, D. A. [ca. 1975]. Applications of fuzzy sets to systems analysis. In Interdisciplinary systems research [Book]. Basel [u.a.]: Birkhäuser.

NEGOIŢĂ, Constantin Virgil und RALESCU, Dan A., 1975. Applications of fuzzy sets to systems analysis. Basel [u.a.]: Birkhäuser. Interdisciplinary systems research, 11. ISBN 3764307897.

Negoiţă, C. V., und D. A. Ralescu. „Applications of fuzzy sets to systems analysis“. Interdisciplinary systems research, book, Birkhäuser, 1975.

Negoiţă, Constantin Virgil/Ralescu, Dan A.: Applications of fuzzy sets to systems analysis, . Interdisciplinary systems research, Basel [u.a.] 1975.

Negoiţă, C.V. und Ralescu, D.A. (1975), Applications of fuzzy sets to systems analysis, Interdisciplinary systems research, Bd. , Birkhäuser, Basel [u.a.].