Nurmurzayev Z.N., Suvonov Z.K., and Khimmatov I.Kh. “Ultrasound of the Abdominal Cavity”. Journal the Coryphaeus of Science, vol. 4, no. 4, Dec. 2022, pp. 89-97, http://jtcos.ru/index.php/jtcos/article/view/25.