| Poem "Retro-perspektiva"
Letter, A.P. Ershov->N. Semeschenko, 29.04.1970about repayment
Working noteswritten on punch-cards
Telegram, A.P. Ershov->Yu. A. Voskresensky, 12.12.1969about changes made to the experts' opinion
Letter, 27.11.1969informing of sending over the paper, experts' opinion and certificates
Letter, E. A. Fedosov->A.P. Ershov, 29.10.1969informing of sending over the papers, experts' opinions and certificates
Letter, V. I. Gritsenko->M. R. Shura-Bura, 29.12.1969The paper is sent
Letter, Yu. A. Voskresensky->A.P. Ershov, 16.12.1969about the experts' opinion
Letterabout changes in the paper's title
Letter, V. Karrask ->A.P. Ershov, 29.12.1969The paper is sent
Letter, 13.11.1969The paper is sent
Letter, V. I. Legonkov->A.P. Ershov..., 13.11.1969about papers preparation
Letter, B. Yakobson ->A.P. Ershov, 10.11.1969The paper is sent
Letter, V. A. Statulyavichus->A.P. Ershov, 09.11.1969The paper is sent
Letter, A. A. Voronov->A.P. Ershov, 30.10.1969The paper is sent
Subject-matter, 11.09.1969(?)
Letter, 28.10.1969
Letter, 15.11.1969
Letter, 11.11.1969
Letter, M. R. Levinson->A.P. Ershov, 20.06.1969
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