@misc{RM_1969_24_3_a6,
     title = {Sergei {Natanovich} {Bernstein} (photo)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1969_24_3_a6/}
}