Letter (hand-written), A.P. Ershov->J. Hartmanis, 19.11.1981
Letter, A.P. Ershov->Tony Hoare, 12.05.1981
Handwritten note, A.P. Ershov->Tony Hoare, 19.01.1982Sympathy with the addressee after having read dedication to his article in "Science of Computing Programming".
Letter, A.P. Ershov->G. Rossbach, 18.06.1981with the list of Soviet authors whose papers have been sent
Covering letter, A.P. Ershov->G. Rossbach, 18.06.1981to some of the Urgench papers
Covering letter, A.P. Ershov->G. Rossbach, 17.06.1981to the Soviet part of "Urgench'79 Papers"
Covering letter, A.P. Ershov->G. Rossbach, 21.07.1981to the paper by N. Nepeivoda
Telegram, A.P. Ershov->G. Rossbach, 06.07.1981Hope to ship the rest of the copies in two weeks
Telegram, A.P. Ershov->D. E. Knuth, 06.07.1981Confirms correctness of the Tseitin's text except for one misprint in the first line
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