LIGĘZA, Jan. Generalized periodic solutions of ordinary linear differential equations in the Colombeau algebra. Annales Mathematicae Silesianae, [S. l.], v. 11, p. 67–87, 1997. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14185. Acesso em: 5 dec. 2025.