00649naa#a2200181#i#4500001001500000003001700015005001700032011001400049100004100063102000700104200005300111210012500164215001000289608002700299686006500326700003700391856003900428EN\\bibl\38190/en/manage/index20250306185925.4##a2686-9896##a20200616b2020####ek#y0engy0150####ca##aRU1#aABOUT EXISTENCE MODEL COMPANIONeJournal article1#aAngarskcFederal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»d2020##a0 с.##aJournal article2local##aОбщие вопросы математики. 27.012grnti#1aChihachevgSergey Aleksandrovich4#atest.editorum.ruu/en/manage/index