CHMARA, Magdalena. A generalized version of the Lions-type lemma. Annales Mathematicae Silesianae, [S. l.], v. 37, n. 2, p. 240–247, 2023. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/15880. Acesso em: 7 dec. 2025.