BYSZEWSKI, Ludwik. Strong maximum principles for infinite implicit parabolic systems. Annales Mathematicae Silesianae, [S. l.], v. 28, p. 35–46, 2014. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13988. Acesso em: 5 dec. 2025.