@misc{RM_1960_15_6_a12,
     title = {Nikolay {Vladimirovich} {Efimov} (photo)},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1960},
     volume = {15},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_6_a12/}
}