@Article{ acebutpri01, author = { Acerbi, Emilio and Buttazzo, Giuseppe and Prinari, Francesca }, title = { The class of functionals which can be represented by a supremum }, journal = { J. Convex Anal. }, year = { 2002 }, volume = { 9 }, number = { 1 }, pages = { 225-236 }, URL = { http://cvgmt.sns.it/paper/419/ }, note = { cvgmt preprint} }