ROCKAFELLAR, R. T. Minimax Theorems and Conjugate Saddle-Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 14, p. 151–173, 1964. DOI: 10.7146/math.scand.a-10714. Disponível em: https://www.mscand.dk/article/view/10714. Acesso em: 24 nov. 2024.