KOFANOV, V. A. Inequalities of Different Metrics for Differentiable Periodic Functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 2, p. 202–212, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1974. Acesso em: 5 dec. 2025.