1. On measures of entropy of fuzzy sets;Batyrshin,1978
2. On some properties of measures of nonprobabilistic entropy of fuzzy sets;Batyrshin,1978
3. On algebra of fuzzy sets and De Morgan algebras;Batyrshin,1980
4. Methods of Systems Analysis Based on Weighted Relations;Batyrshin,1982
5. Lattice Theory;Birkhoff,1967