TY - JOUR AU - K. I. Oskolkov TI - Approximation properties of summable functions on sets of full measure JO - Sbornik. Mathematics PY - 1977 SP - 489 EP - 514 VL - 32 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1977_32_4_a6/ LA - en ID - SM_1977_32_4_a6 ER -