| Letter, A. S. Alekseev->M. A. Lavrentiev, 07.04.1975 request to consider the issue of Ershov's visit to FRG in June 1975 for 4 weeks
Directions, A. S. Alekseev->A.P. Ershov, 07.04.1975to A.P. Ershov for his scientific trip to FRG
Justification, 07.04.1975of advisability of Ershov's scientific trip to FRG
Telegram, I. V. Plotinsky->I. I. Nedlin, 24.07.1975on sending Ershov on assignment to Moscow for further trip to FRG
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