NISHIZAWA, Y. Extended constant parts of Becker-Stark’s and Shafer-Fink’s inequalities. Tamkang Journal of Mathematics, [S. l.], v. 47, n. 4, p. 385–391, 2016. DOI: 10.5556/j.tkjm.47.2016.2024. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2024. Acesso em: 18 apr. 2024.