OBENG, B. A.; OBENG-DENTEH, W.; FOSU, G. O.; YARO, D. An Epidemiological Model for Sexual Activities. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 17, n. 1, p. 210–214, 2014. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2370. Acesso em: 3 jul. 2024.