Минаев, Ю. Н., Филимонова, О. Ю., & Минаева, Ю. и. (2014). Subsets ordered pairs, received on base of extreme principles, and their application as fuzzy sets. Problems of Informatization and Control, 3(47), 53–61. https://doi.org/10.18372/2073-4751.3.7750