ZHELNOV, O. D. Whitney Interpolation Constants Bounded by 2 for k = 5, 6, 7. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 55, n. 4, p. 546–549, 2003. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3928. Acesso em: 5 dec. 2025.