Congratulation, A.P. Ershov->S. L. Sobolev, 24.09.1978 on the 70-th anniversary of Academician S.L. Sobolev
Congratulation, A.P. Ershov->A.P. Okladnikov, 24.08.1978on the Academician A.P. Okladnikov's anniversary
Congratulation, A.P. Ershov->A. A. Samarsky, 19.02.1979on the day of A.A. Samarsky's anniversary
Rough copy of congratulation, A.P. Ershov->V. S. Vladimirov, 19.01.1983with the high award
Rough copy of congratulation, A.P. Ershov->A. P. Merenkov, 11.02.1983A.Ershov expresses his great esteem to the addressee and is delighted by his scientific activity.
Congratulation, A.P. Ershov->N. N. Govorun, 24.03.1980on the 50-th anniversary of N.N.Govorun.
Congratulation, A.P. Ershov->V. S. Burtsev, 26.01.1977on the 50-th anniversary of V.S.Burtsev.
Draft, A.P. Ershov->N. P. Dolbilin, 20.02.1988(?)of a birthday congratulation.
Congratulations, A.P. Ershov->G. I. Marchuk, 28.05.1975
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