LITVIN, O.N. Interlination of the functions of 2 variables on $M (M\geq2)$ straight lines with the highest algebraic accuracy . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 11, p. 1498–1504, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8251. Acesso em: 5 dec. 2025.