@misc{RM_1972_27_6_a0,
     title = {Fifty years of the {U.S.S.R.}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--2},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_6_a0/}
}