BARON, Karol. On the continuous dependence of solutions to orthogonal additivity problem on given functions. Annales Mathematicae Silesianae, [S. l.], v. 29, p. 19–23, 2015. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13974. Acesso em: 5 dec. 2025.