%0 Journal Article %A Ursescu, Corneliu %T Multifunctions with convex closed graph %J Czechoslovak Mathematical Journal %D 1975 %P 438-441 %V 25 %N 3 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1975.101337/ %R 10.21136/CMJ.1975.101337 %G en %F 10_21136_CMJ_1975_101337