A Fuzzy Classification of the Chemical Elements. - Horia F. Pop; Costel Sârbu; Ossi Horowitz; D. Dumitrescu (J. Chem. Inf. Comput. Sci., 1996)

A Fuzzy Cross-Classification of the Chemical Elements, Based on Their Physical, Chemical, and Structural Features. - Costel Sârbu; Ossi Horowitz; Horia F. Pop (J. Chem. Inf. Comput. Sci., 1996)