00609naa#a2200169#i#450# EN\\bibl\42669 20241222175205.7 2073-5537 20210318b2021####ek#y0engy0150####ca RU Competencies diversification in COVID-19 pandemic conditions (case of congress-exhibition service market) Journal article Astrakhan Astrakhan State Technical University 2021 8 с. Journal article local Экономика. Экономические науки. 33 Manenkov Sergey Aleksandrovich vestnik.astu.org