GOLOVLEVA V, LAUKHINA KD, PYROVA M, P. A. PRICING OPTIMIZATION OF SERVICES AND FACILITIES FOR TOURIST IN UGRA NATIONAL PARK. Сервис PLUS [Internet]. 2026 Mar. 3 [cited 2026 Jun. 29];20(1):26-35. Available from: https://service-plus-journal.ru/index.php/service-plus/article/view/172