%0 Journal Article %A A. Giacobbe %T Covexity and multivalued Hamiltonians %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2000 %P 578-580 %V 55 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2000_55_3_a11/ %G en %F RM_2000_55_3_a11