LEMMA, Mulatu; ATENA, Agegnehu; MUCHE, Tilahun. The Fascinating Double Angle Formulas of the Mulatu Numbers. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 4, n. 1, p. 25–29, 2016. DOI: 10.31686/ijier.vol4.iss1.504. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/504.. Acesso em: 3 jul. 2024.