TY - JOUR AU - G. A. Karagulyan TI - On Riemann sums and maximal functions inĀ $\mathbb R^n$ JO - Sbornik. Mathematics PY - 2009 SP - 521 EP - 548 VL - 200 IS - 4 UR - http://geodesic.mathdoc.fr/item/SM_2009_200_4_a2/ LA - en ID - SM_2009_200_4_a2 ER -