TY JOUR TI Organizational model for managing product marketing in the FMCG market segment KW FMCG market KW product KW consumer behavior KW online shopping KW sales structure KW digitalization KW omnichannel model JO Journal of Applied Research AU Pul, S.D. AU Tsibulnikova, V.Y. PY 2026 IS 0 PB ITBO University