Arpentieva, M. R., P. V. Menshikov, N. V. Kuznetsova, and I. V. Gorelova. “Esoteric Tourism As a Niche Type of Tourism: Opportunities and Ways of Human Self-Improvement”. Services in Russia and Abroad, vol. 14, no. 5/92, Dec. 2020, pp. 6-25, doi:10.24411/1995-042X-2020-10501.