The Number of periodic solutions of a Riccati type logistic periodic equation. Journal of Zankoy Sulaimani - Part A, [S. l.], v. 7, n. 1, p. 25–29, 2003. DOI: 10.17656/jzs.10119. Disponível em: https://jzs.univsul.edu.iq/index.php/jzs/article/view/jzs-10119.. Acesso em: 23 apr. 2024.