Letter, V. L. Perchuk->A.P. Ershov, 09.12.1981
Letter, ->G. S. Pospelov, 11.12.1981
Letter, V.V.Rusanov->A.P. Ershov, 14.12.1981
Letter, 15.12.1981
Letter, 15.12.1981
Letter, V. A. Statulyavichus->A.P. Ershov, 16.12.1981
Letter, B. N. Naumov->A.P. Ershov, 21.12.1981
Letter, V. M. Glushkov->A.P. Ershov, 21.12.1981Information about the results of 1981 research on the problem "Mathematical and physical foundations of the development of computing engineering and informatics" carried out in the UkrSSR AS Institute of Cybernetics
Letter, 22.12.1981
Envelope
Letter, M. G. Tsuladze->A.P. Ershov, 23.12.1981
Letter, 29.12.1981
Letter ¹20/1, S. M. Abramovich->A.P. Ershov, 05.01.1982
Envelope
Article
Covering Letter, G. S. Pospelov->V.A. Yevstigneev, 09.03.1982
Letter, S. L. Sobolev->A.P. Ershov, 12.05.1982
Covering Letter, V. E. Kotov->A.P. Ershov, 04.06.1982
Plan
Letter, D.P.Kostomarov->A.P. Ershov, 03.12.1982
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