Covering note, E. N. Novoselov->A.P. Ershov, 22.08.1961
Letter, E. A. Feigenbaum->A.P. Ershov, 07.09.1961Ddiscussing the Computer Center at the University of California and the ways of inviting Ershov to read lecture at the international seminar in Berkeley
Letter, R. Goodman->A.P. Ershov, 20.09.1961
Letter (hand-written), Xu Kunshi->A.P. Ershov, 20.09.1961
Letter, R. Goodman->A.P. Ershov, 26.09.1961
Covering letter, J. Carr III->A.P. Ershov, 22.09.1961
Letter, E. Burger->A.P. Ershov, 05.10.1961
Letter, N. D. Kazarinov->A.P. Ershov, 12.10.1961
Letter, M. Nagao->A.P. Ershov, 17.04.1961
Letter, M. Nagao->Yu.M. Voloshin, 17.10.1961
Letter, R. W. Bemer->A.P. Ershov, 03.10.1961
Letter, R. F. Reeves->A.P. Ershov, 28.09.1961
Letter with attachment, Kohler->A.P. Ershov..., 18.10.1961
Letter (hand-written), Xu Kunshi->A.P. Ershov, 25.10.1961
Letter, F. Nozicka->A.P. Ershov, 11.10.1961
Letter with attachment, L. Lukashevich->A.P. Ershov, 28.10.1961
Letter, J. Carr III->A.P. Ershov, 10.11.1961
Letter, R. Goodman->A.P. Ershov, 29.11.1961
Card
Information, 05.11.1961
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