KENDALL, D. G. Bernstein polynomials and semigroups of operators. MATHEMATICA SCANDINAVICA, [S. l.], v. 2, p. 185–186, 1954. DOI: 10.7146/math.scand.a-10404. Disponível em: https://www.mscand.dk/article/view/10404. Acesso em: 2 may. 2024.