Abdulkhakimov Zuhrali Tursunalievich, Mullabayev Baxtiyarjon Bulturbayevich, Soliyev Ibodulloxon Ismatullayevich, Boyturaev Olimjon Urayimovich, Yokubjonovna Hulkarbonu Yokubovna 2021. Use of Gravitation Models in the Development of Tourism and Recreation. Annals of the Romanian Society for Cell Biology. 25, 2 (Mar. 2021), 3124–3143.