MORAWIEC, Janusz. On bounded solutions of a problem of R. Schilling. Annales Mathematicae Silesianae, [S. l.], v. 8, p. 97–101, 1994. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14221. Acesso em: 18 apr. 2025.