WRÓBEL, Małgorzata. On functions of bounded n-th variation. Annales Mathematicae Silesianae, [S. l.], v. 15, p. 79–86, 2001. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14117. Acesso em: 16 dec. 2025.