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Correspondence
Incoming mail (1973)
Letter
Letter
Request to be an official opponent at V.N. Lifshits’s thesis defending; short account of the work’s history and of interaction with A.A. Liapunov.
Date: 12.08.1973
Original document language: russian
Authors: Leonid E. Sadovsky
Persons: Alexei A. Lyapunov, Vladimir N. Lifshits
Addressee: Andrei Petrovich Ershov

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