00548naa#a2200169#i#450# EN\\bibl\54746 20240530191347.4 2072-9502 20221025b2022####ek#y0engy0150####ca RU Probabilistic duopoly model Journal article Astrakhan Astrakhan State Technical University 2022 11 с. Journal article local Математическая экономическая теория. 330.42 Mikheev Andrej Vyacheslavovich vestnik.astu.org