SANDGREN, L. A correction to "On convex cones". MATHEMATICA SCANDINAVICA, [S. l.], v. 3, p. 170–170, 1955. DOI: 10.7146/math.scand.a-10437. Disponível em: https://www.mscand.dk/article/view/10437. Acesso em: 5 may. 2024.