00485naa#a2200169#i#450# EN\\bibl\117093 20260319152724.4 2413-046X 20260228b2026####ek#y0engy0150####ca RU MARKETING PLANNING IN TURBULENT MARKET CONDITIONS Journal article Moscow Electronic science 2026 6 с. Journal article local Маркетинг. 339.138 Savinova Elena Valer'evna mshj.ru