BABENKO, V. F. Investigations of dnepropetrovsk mathematicians related to inequalities for derivatives of periodic functions and their applications. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 1, p. 9–29, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4392. Acesso em: 7 apr. 2025.