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- G. A. Nikolsky, Yu. D. Medvedev, E. O. Schultz: The Tunguska Catastrophe is the Consequence of a Series of Explosions of Comet Nucleus Fragments // Protecting the Earth against Collisions with Asteroids and Comet Nuclei, In: A. M. Finkelstein, W. F. Huebner, V. A. Shor (Eds) Proceedings of the International Conference “Asteroid-Comet Hazard-2009”, StP: Nauka, 179–183 (2010)