KLEE, V. L. Jr. Iteration of the "lin" operation for convex sets. Mathematica Scandinavica, Berkeley, CA, United States, v. 4, p. 231–238, 1956. DOI: 10.7146/math.scand.a-10470. Disponível em: https://journals.msp.org/mscand/article/view/2849. Acesso em: 25 jul. 2026.