00583naa#a2200169#i#450# EN\\bibl\42963 20240504192530.6 2500-3372 20210331b2021####ek#y0engy0150####ca RU Institutionalization of Exhibition and Convention Activity in Innovation-Based Economy Journal article Kemerovo Kemerovo State University 2021 9 с. Journal article local Экономика. Экономические науки. 33 Manenkov Sergey Aleksandrovich vestnik-pses.kemsu.ru