ARIKAN, T.; PRODINGER, H. Evaluation of some reciprocal trigonometric sums via partial fraction decomposition. Kuwait Journal of Science, [S. l.], v. 47, n. 1, 2020. Disponível em: https://journals.ku.edu.kw/kjs/index.php/KJS/article/view/7113. Acesso em: 6 may. 2026.