LIGĘZA, Jan. On a two point boundary value problem for linear differential equations of the fourth order in the colombeau algebra. Annales Mathematicae Silesianae, [S. l.], v. 15, p. 45–66, 2001. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14115. Acesso em: 5 dec. 2025.