00590naa#a2200181#i#450# EN\\bibl\42960 /en/manage/index 20250517142548.6 2500-3372 20210331b2021####ek#y0engy0150####ca RU Rational Managerial Decisions in Business Sector Journal article Kemerovo Kemerovo State University 2021 11 с. Journal article local Статистика. Демография. Социология. 31 Shumkin Evgeny Mihaylovich fht.editorum.ru /en/manage/index