Tatiana Parfinenko. “Ways to Increase the Efficiency of SPA-Hotels in a Pandemic”. The Journal of V. N. Karazin Kharkiv National University. Series: International Relations. Economics. Country Studies. Tourism, no. 15 (August 1, 2022): 125-130. Accessed May 2, 2024. https://periodicals.karazin.ua/irtb/article/view/20850.