ALZER, H. A SHORT NOTE ON TWO INEQUALITIES FOR SINE POLYNOMIALS. Tamkang Journal of Mathematics, [S. l.], v. 23, n. 2, p. 161–163, 1992. DOI: 10.5556/j.tkjm.23.1992.4538. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4538. Acesso em: 4 may. 2024.