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1. Butrim I. At the turning point of epochs // Red Star. 2012. September 25. P. 4 (in Russ.).
2. The Great Siberian Ice Hike / comp., scientific ed., preface and the comment. of S.V. Volkov. M., 2004 (in Russ.).
3. Decrees of the Soviet power: in 18 vols. M., 1957. Vol. I; 1959. Vol. II; 1968. Vol. IV; 1983. Vol. IX (in Russ.).