@article{Manenkov2021competencies,
author={Manenkov, S.A.},
title={Competencies diversification in COVID-19 pandemic conditions (case of congress-exhibition service market)},
journal={Vestnik of Astrakhan State Technical University. Series: Economics},
publisher={Astrakhan State Technical University},
year={2021},
pages={84-92},
volume={},
issue={1},
}