%0 Journal Article %A T. Nishishiraho %T Korovkin Sets and Mean Ergodic Theorems %J Journal of convex analysis %D 1998 %P 147-152 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_1998_5_1_a10/ %F JCA_1998_5_1_a10