TY - JOUR AU - T. Nishishiraho TI - Korovkin Sets and Mean Ergodic Theorems JO - Journal of convex analysis PY - 1998 SP - 147 EP - 152 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JCA_1998_5_1_a10/ ID - JCA_1998_5_1_a10 ER -