E. M. ELSAYED; HANAN S. GAFEL. On Some Systems of Three Nonlinear Difference Equations. Journal of Computational Analysis and Applications (JoCAAA), [S. l.], v. 29, n. 1, p. 86–108, 2021. Disponível em: https://eudoxuspress.com/index.php/pub/article/view/131. Acesso em: 19 dec. 2024.