1. Luchko SA, Michalevich SI. Multiple fertility after the application of assisted reproduction techniques. Controversial issues. Medical news. 2018;4:283. (In Russ.). https://cyberleninka.ru/article/n/mnogoplodie-posle-primeneniya-metodov-vspomogatelnoy-reproduktsii-spornye-voprosy
2. Isthmic-cervical insufficiency in multiple pregnancies
3. https://science-education.ru/ru/article/view?id=28190 Mikhailin ES, Shilo MM, Ivanova LA. Peculiarities of the course of pregnancy and the genera in the duals with different type of placentation. Modern problems of science and education. 2018;5. (In Russ.). @@https://science-education.ru/ru/article/view?id=28190
4. Bashmakova NV, Kosovtsova NV. Fetal Surgery: Achievements and Challenges. Doctor.Ru. 2017;13(142)-14(143):31-36. (In Russ.)
5. Differential diagnostics of complications monochorionic multiple pregnancy (a review)