For citations:
Filippova I.G., Derevyanko K.I., Karpova E.G., Khoreva L.V. Current State of the Convention and Exhibition Market and Event Services: Problems and Development Trends in a Metropolis. Economics and Management. 2020;26(10):1136-1147. (In Russ.) https://doi.org/10.35854/1998-1627-2020-10-1136-1147
