@article{FAA_1990_24_3_a9,
     author = {E. I. Berezhnoi},
     title = {Differentiation bases and symmetric spaces},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {66--67},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1990_24_3_a9/}
}