1. Grigovich I. N. Rare surgical diseases of the digestive tract in children – L. Medicine: 1985; 153–9. (In Russian)
2. Vesely, S. V., Sopov, G., Latyshev, K. V. foreign bodies of the gastrointestinal tract of a child. Pediatric surgery. 2012; (1):50–1. (In Russian)
3. Elovoj M. M., Borozna V. G., Kuhtarev A. A., Razumova T. E. Trichobezoar of the stomach and small intestine in children. Surgery news. 2012; (2):96–100. (In Russian)
4. Shcherbak V. A., Gamolina S. G., Cherdantseva V. G. Two cases of trichobezoar in girls. Issues of modern Pediatrics. 2016;15 (3):311–4. (In Russian)
5. Sokolov Yu. I., Ionov D. V., Tumanyan G. T., Donskoy D. V., Khaspekov D. V. Shuvalov M. E. Minimally Invasive methods of removal of stomach and duodenum trichobezoars in children Journal of Pediatric Surgery, Anesthesia and Intensive Care 2012;1:56–9. (In Russian)