Fuzzy normal subgroups and fuzzy cosets. - N. P. Mukherjee; Prabir Bhattacharya (Inf. Sci., 1984)

Fuzzy relations and fuzzy groups. - Prabir Bhattacharya; N. P. Mukherjee (Inf. Sci., 1985)

Fuzzy groups: Some group-theoretic analogs. - N. P. Mukherjee; Prabir Bhattacharya (Inf. Sci., 1986)

Fuzzy groups: Some group theoretic analogs. II. - Prabir Bhattacharya; N. P. Mukherjee (Inf. Sci., 1987)

On the Representation of Uncertain Information by Multidimensional Arrays. - Prabir Bhattacharya; N. P. Mukherjee (IEEE Trans. Syst. Man Cybern. Syst., 1994)