LIGUN, A. A.; SHUMEIKO, A. A. Description of Convex Curves. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 7, p. 908–922, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4490. Acesso em: 6 dec. 2025.