MOTRONEA, Gabriela; OTROCOL, Diana; RASA, Ioan. Perov’s theorem applied to systems of equations. Modern Mathematical Methods, [S. l.], v. 1, n. 1, p. 22–29, 2023. Disponível em: https://modernmathmeth.com/index.php/pub/article/view/18. Acesso em: 8 sep. 2024.