@article{JCA_2012_19_2_JCA_2012_19_2_a13,
     author = {S. M. Robinson},
     title = {A {Short} {Derivation} of the {Conjugate} of a {Supremum} {Function}},
     journal = {Journal of convex analysis},
     pages = {569--574},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/JCA_2012_19_2_JCA_2012_19_2_a13/}
}