00601naa#a2200169#i#450# EN\\bibl\111674 20260217141728.2 2712-7516 20260123b2026####ek#y0engy0150####ca RU Methods of corporate customers' segmentation and their impact on the product portfolio structure Journal article Moscow ITBO University 2026 0 с. Journal article local Финансы. Банковское дело. Деньги и денежное обращение. 336 Volkov Igor Yurievich zhpi.ru