PERSSON, L. E. Interpolation with a parameter function. MATHEMATICA SCANDINAVICA, [S. l.], v. 59, p. 199–222, 1986. DOI: 10.7146/math.scand.a-12162. Disponível em: https://www.mscand.dk/article/view/12162. Acesso em: 1 may. 2024.