HEJMEJ, Beata. Stability of functional equations in dislocated quasimetric spaces. Annales Mathematicae Silesianae, [S. l.], v. 32, p. 215–225, 2018. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13921. Acesso em: 5 dec. 2025.