Safronova, T. N., O. M. Evtukhova, and O. A. Yabrova. “Social Tourism As a Tourism Development Trend in the Russian Federation and Regions”. Services in Russia and Abroad, vol. 15, no. 1/93, Apr. 2021, pp. 122-8, doi:10.24412/1995-042X-2021-1-122-128.