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Vsesoi︠u︡znyĭ matematicheskiĭ sʺezd (4th 1961 Leningrad)

  • Trudy chetvertogo Vsesoi︠u︡znogo matematicheskogo sʺezda, Leningrad, 3-12 ii︠u︡li︠a︡ 1961Trudy chetvertogo Vsesoi︠u︡znogo matematicheskogo sʺezda, Leningrad, 3-12 ii︠u︡li︠a︡ 1961