TY - JOUR AU - E. I. Berezhnoi TI - Differentiation bases and symmetric spaces JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1990 SP - 66 EP - 67 VL - 24 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1990_24_3_a9/ LA - ru ID - FAA_1990_24_3_a9 ER -