BRONDSTED, Arne. Convexification of conjugate functions. Mathematica Scandinavica, Berkeley, CA, United States, v. 36, p. 131–136, 1975. DOI: 10.7146/math.scand.a-11567. Disponível em: https://journals.msp.org/mscand/article/view/2045. Acesso em: 25 jul. 2026.