SHAPIRO, H. S. Bilinear representation formulas for polynominals. MATHEMATICA SCANDINAVICA, [S. l.], v. 62, p. 246–252, 1988. DOI: 10.7146/math.scand.a-12216. Disponível em: https://www.mscand.dk/article/view/12216. Acesso em: 28 apr. 2024.