1. Fuzzy Graphs and Fuzzy Hypergraphs;Monderson;Heidelberg; New-York. Physica-Verl,2000
2. Encyclopedia of Artificial Intelligence;Bershtein,2008
3. Estimation of Isomorphism Degree of Fuzzy Graphs. Proceedings of Third Conference of the European Society for Fuzzy Logic and Technology EUSFLAT’2003, University of Applied Sciences at Zittau/Goerliz;Bershtein;Germany,2003
4. Fuzzy coloring and evaluation of the degree of isomorphism of fuzzy graphs;Bershtein;Journal of Computer and Systems Sciences International.,2002