Оборин, Матвей Сергеевич. “Sustainable Development Mechanism Strategic Market of Sanatorium-Resort”. HERALD OF TVER STATE UNIVERSITY. SERIES: GEOGRAPHY AND GEOECOLOGY, no. 2 (February 28, 2019): 218–230. Accessed November 13, 2024. https://journal.tversu.ru/index.php/geo/article/view/188.