LIGUN, A. A.; SHUMEIKO, A. A. On a problem of restoration of curves. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 51, n. 2, p. 181–189, 1999. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4597. Acesso em: 5 dec. 2025.