ПРИСТАВКА, П. Addition of sequences counting functions of two variables based on polynomial splines. Proceedings of National Aviation University (archive), [S. l.], v. 33, n. 3-4, p. 36–39, 2007. DOI: 10.18372/2306-1472.33.1494. Disponível em: http://jrnl.kai.edu.ua/index.php/visnik/article/view/1494. Acesso em: 13 apr. 2026.