SEROHINA, N., 		PIKHURETS, O., 		SUKHATSKYI, R., 		YEVLAKHOVA, E., 		LYTVYN, S., & 		MIROSHNYKOV, I.
2021 Feb 22.  On the Problems of Amending the Terms of the Contract on the Provision of Tourism Services during the COVID-19 Pandemic. Journal of Environmental Management and Tourism. [Online] 12:1