LIMA, A. An application of a theorem of Hirsberg and Lazar. MATHEMATICA SCANDINAVICA, [S. l.], v. 38, p. 325–340, 1976. DOI: 10.7146/math.scand.a-11639. Disponível em: https://www.mscand.dk/article/view/11639. Acesso em: 27 apr. 2024.