MARKOVA, Irina; NIKOLOV, Asen; MARKOV, Peter. Twin Pregnancy: Delivery and Complications. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 30, n. 2, p. 241–250, 2016. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/6495. Acesso em: 13 sep. 2025.