00670naa#a2200181#i#450# EN\\bibl\97020 20250702185412.3 2782-4586 20250423b2025####ek#y0engy0150####ca RU Digital ecosystem model: Russian b2c market leaders and their adaptation to modern challenges Journal article Moscow ITBO University 2025 10 с. Journal article local Экономическая политика. Управление и планирование в экономике. 338.2 Guz Anastasia Ruslanovna Stefanova Natalia Alexandrovna jomeam.ru