SCHINZEL, Andrzej. On Pythagorean triangles. Annales Mathematicae Silesianae, [S. l.], v. 12, p. 31–33, 1998. Disponível em: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14161. Acesso em: 6 jul. 2025.