BOUMAHDI, R.; KIHEL, O.; MAVECHA, S. Proof of the conjecture of Keskin, Siar and Karaatli. Annales Fennici Mathematici, [S. l.], v. 43, n. 1, p. 557–561, 2018. DOI: 10.5186/aasfm.2018.4328. Disponível em: https://afm.journal.fi/article/view/135744. Acesso em: 22 nov. 2024.