JESSEN, B.; THORUP, A. The algebra of polytopes in affine spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 43, p. 211–240, 1978. DOI: 10.7146/math.scand.a-11777. Disponível em: https://www.mscand.dk/article/view/11777. Acesso em: 24 nov. 2024.