BOONKLURB, R.; LAOHARENOO, A. . Exact value of integrals involving product of sine or cosine function. New Zealand Journal of Mathematics, [S. l.], v. 53, p. 51–61, 2022. DOI: 10.53733/235. Disponível em: https://nzjmath.org/index.php/NZJMATH/article/view/235. Acesso em: 8 dec. 2022.