WAKSMAN, Z. On the shadows and the sections of convex sets. MATHEMATICA SCANDINAVICA, [S. l.], v. 38, p. 307–320, 1976. DOI: 10.7146/math.scand.a-11637. Disponível em: https://www.mscand.dk/article/view/11637. Acesso em: 4 may. 2024.