Letter, A.P. Ershov->T. K. Word, 10.05.1973
Letter, A.P. Ershov->N. V. Shkut, 10.05.1973
Letter, A.P. Ershov->D. N. Todoroi, 10.05.1973
Telegram, A.P. Ershov->B.A. Zagatsky, 04.06.1973
Letter, A.P. Ershov->A. N. Tikhonov, 08.06.1973
Telegram, A.P. Ershov->N. N. Kuznetsov, 18.06.1973
Telegram, A.P. Ershov->Yu. A. Pervin, 26.07.1973
Letter, A.P. Ershov->S. G. Korneev, 27.07.1973on the decrease of business trip duration
Letter, A.P. Ershov->V. V. Pazelskiy, 27.07.1973
Covering letter, A.P. Ershov->E. L. Yuschenko, 08.08.1973
Letter, A.P. Ershov->F. Ya. Vetukhnovsky, 09.08.1973
Letter, A.P. Ershov->N.A. Karpova, 10.08.1973
Letter, A.P. Ershov->Yu. A. Pervin, 10.08.1973
Covering letter, A.P. Ershov->A. A. Letichevsky, 13.08.1973to the final version of the paper by V.Val'kovsky; consent to be an official opponent
Memo, A.P. Ershov->S. G. Korneev, 10.09.1973Request to confirm authorization of additional expenses during the business trip to the USA
Letter, G. I. Marchuk->M. A. Lavrentiev, 10.09.1973(?)Request to transfer D.Levin fron the Institute of Hydrodynamics to the Computing Center
Telegram, A.P. Ershov->A. Stukalo, 19.09.1973
Telegram, A.P. Ershov->I. Maslyankina, 19.09.1973
Letter, A.P. Ershov->T. I. Amanov, 05.10.1973
Letter, A.P. Ershov->A. S. Popov..., 05.10.1973
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