CHIMPANZO, J.; OTERO-ESPINAR, M. V.; BORGES, A.; VASCO, P.; CATARINO, P. Bidimensional extensions of cobalancing and Lucas-cobalancing numbers. Annales Mathematicae Silesianae, [S. l.], v. 38, n. 2, p. 241–262, 2023. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/16430. Acesso em: 5 dec. 2025.