00564naa#a2200169#i#450# EN\\bibl\45954 20241128042127.4 2073-5537 20210922b2021####ek#y0engy0150####ca RU Digital economy of China: level and factors of development Journal article Astrakhan Astrakhan State Technical University 2021 8 с. Journal article local Экономика. Экономические науки. 33 Levchenko Tatiana Aleksandrovna vestnik.astu.org