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://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14221. Acesso em: 7 may. 2025.