00646naa#a2200169#i#450# EN\\bibl\118969 20260406233008.1 2949-1258 20260403b2026####ek#y0engy0150####ca RU Conceptual transformations of modern marketing in conditions of digital business environment and development of virtual markets Journal article Vladivostok Vladivostok State University 2026 10 с. Journal article local Экономика. Народное хозяйство. Экономические науки. 33 Jiatong Li ojkum.editorum.ru