Letter, A. K. Romanov->A. K. Bagina, 30.04.1970
Letter, V. P. Kochergin->K. V. Tobolev, 20.05.1970(?)
Letter, V. P. Kochergin->A. K. Romanov, 01.08.1970(?)
Letter, G. I. Marchuk->S. A. Lebedev, 05.01.1971
Letter, G. I. Marchuk->P. P. Koryavov, 20.04.1971
Letter, G. I. Marchuk->V. S. Semenikhin, 20.04.1971
Letter, 10.03.1973
Letter, G. I. Marchuk->M. V. Keldysh, 25.03.1973
Letter, M. A. Lavrentiev->N. G. Zorin, 10.10.1967
Letter, G. I. Marchuk->E. A. Antonov, 30.04.1968
Congratulation, 15.11.1967
Letter, G. I. Marchuk->M. A. Lavrentiev, 01.10.1969(?)
Letter, S. L. Sobolev->M. A. Lavrentiev, 31.07.1962Application for a scientific trip of L.V. Kantorovich to the USA
Program, 19.12.1962of A.P. Ershov's visit to Sweden
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