YANGARI, M.; SALAZAR, D. Parabolic Systems Involving Sectorial Operators: Existence and Uniqueness of Global Solutions. Revista Politécnica, [S. l.], v. 38, n. 1, p. 40, 2016. Disponível em: https://revistapolitecnica.epn.edu.ec/ojs2/index.php/revista_politecnica2/article/view/479. Acesso em: 13 ago. 2020.