КОВТУН, А. М. Exploration of describing the vector-parametric bi-spline, defined by the forth degree spline with control points incident with surface of appropriate smoothness. Technology audit and production reserves, [S. l.], v. 5, n. 7(25), p. 4–7, 2015. DOI: 10.15587/2312-8372.2015.51287. Disponível em: https://journals.uran.ua/tarp/article/view/51287. Acesso em: 4 may. 2024.