海量图书期刊资源，随时随地畅享阅读乐趣
Protogroups generated by fuzzy setsK.C. Gupta; Suryansu Ray · 1993
Fuzzy plane projective geometryK.C. Gupta; Suryansu Ray · 1993
Modularity of the quasi-Hamiltonian fuzzy subgroupsK.C. Gupta; Suryansu Ray · 1994