ALFSEN, Erik M. A Note on the Borel Structure of a Metrizable Choquet Simplex and of its Extreme Boundary. Mathematica Scandinavica, Berkeley, CA, United States, v. 19, p. 161–171, 1966. DOI: 10.7146/math.scand.a-10805. Disponível em: https://journals.msp.org/mscand/article/view/2540. Acesso em: 25 jul. 2026.