IVANOV, G. M. Modulus of Supporting Convexity and Supporting Smoothness. Eurasian Mathematical Journal, [S. l.], v. 6, n. 1, p. 26–40, 2015. Disponível em: https://emj.enu.kz/index.php/main/article/view/595. Acesso em: 9 oct. 2025.