00665naa#a2200169#i#450# EN\\bibl\94014 20250414003314.1 2413-2527 20250324b2025####ek#y0engy0150####ca RU Mathematical Model for Product Category Assortment and Shelf Space Allocation Within a Retail Trade System Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2025 8 с. Journal article local Управление грузовыми перевозками. 656.073 Cherniakhovskaia Ekaterina Sergeevna atjournal.ru