00638naa#a2200181#i#450# EN\\bibl\125711 20260710050749.5 2782-4586 20260630b2026####ek#y0engy0150####ca RU Digital activity as a factor of competitiveness of small and medium-sized enterprises Journal article Moscow ITBO University 2026 8 с. Journal article local Экономические науки в целом. Политическая экономия. 330 Levchenko Roman Yur'evich Poluyahtova Evgeniya Ramilevna zhpi.ru