JOHANSEN, S. A Representation Theorem for a Convex Cone of Quasi Convex Functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 30, p. 297–312, 1972. DOI: 10.7146/math.scand.a-11086. Disponível em: https://journals.msp.org/mscand/article/view/2241. Acesso em: 25 jul. 2026.