TY JOUR TI THEORETICAL ASPECTS OF MODELLING THE CUSTOMER CHOICE OF REINDEER MEAT PRODUCTS KW purchasing model KW regional markets KW reindeer meat KW food quality JO Trade, service, food industry AU Demakova, E.A. AU Berdnikova, E.A. AU Ilyina, A.V. AU Giss, V.E. PY 2023 IS 3 PB Siberian Federal University