PÁLES, Zsolt; ZAKARIA, Amr. An extension of the Abel–Liouville identity. Annales Mathematicae Silesianae, [S. l.], v. 36, n. 2, p. 206–214, 2022. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13550. Acesso em: 12 apr. 2025.