Vikent’ev, A.A. 2016. “Study of Model Distances on Logical Statements Based on Expert Interpretation of the Formulas of Many-Valued Logics of Lukasiewicz and Automatic Clustering of Knowledge Bases. I”. Bulletin of the Karaganda University. Mathematics Series 82 (2):23-31. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/87.