Ilyasov, Aziz Saidmuradovich, and Fazliddin Sadriddinovich Turaev. “Morphofunctional Features of the Structure of Gastrointestinal Tract Spincters”. International Journal of Development and Public Policy, vol. 1, no. 4, Sept. 2021, pp. 59-64, https://oajournals.net/index.php/ijdpp/article/view/209.