00721naa#a2200169#i#450# EN\\bibl\85482 20241122101552.5 2413-2527 20240717b2024####ek#y0engy0150####ca RU Mathematical Model of Product Display on the Shelf Space of a Retail Chain with the Presence of Expandable and Contractible Segments for Definite Types of Products Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2024 9 с. Journal article local Управление грузовыми перевозками. 656.073 Chernyahovskaya Ekaterina Sergeevna atjournal.ru