CEDEÑO TOVAR, R. Application of a remarkable identity. Paideia Surcolombiana, [S. l.], n. 9, p. 29–30, 2001. DOI: 10.25054/01240307.1020. Disponível em: https://journalusco.edu.co/index.php/paideia/article/view/1020. Acesso em: 18 may. 2024.