00538naa#a2200169#i#450# EN\\bibl\106533 20251128120007.5 2782-4586 20251117b2025####ek#y0engy0150####ca RU Tariff Analytics: Package Cannibalization and Subscriber Retention Journal article Moscow ITBO University 2025 4 с. Journal article local Экономика транспорта и связи. 338.47 Titkov Vladislav Evgen'evich jomeam.ru