S. S. DRAGOMIR. Some Inequalities for Power Series with nonnegative coefficients via a divided difference reverse of Jensen inequality. Scientia Series A: Mathematical Sciences, [S. l.], v. 26, p. 83–99, 2015. Disponível em: https://revistas.usm.cl/scientia/article/view/230.. Acesso em: 28 jun. 2025.