JOHANSEN, S. A Representation Theorem for a Convex Cone of Quasi Convex Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 30, p. 297–312, 1972. DOI: 10.7146/math.scand.a-11086. Disponível em: https://tidsskrift.dk/math/article/view/11086. Acesso em: 14 aug. 2026.