KHUONG, Vu Van. Qualitative properties for a fourth - order Rational Difference Equations. Journal of Global Research in Mathematical Archives(JGRMA), [S. l.], v. 5, n. 11, p. 13–20, 2018. Disponível em: https://jgrma.com/index.php/jgrma/article/view/516. Acesso em: 14 mar. 2025.