WAKSMAN, Z. On the shadows and the sections of convex sets. Mathematica Scandinavica, Berkeley, CA, United States, v. 38, p. 307–320, 1976. DOI: 10.7146/math.scand.a-11637. Disponível em: https://journals.msp.org/mscand/article/view/2012. Acesso em: 25 jul. 2026.