Letter, S. A. Schuman->A.P. Ershov, 04.08.1976
Telegram, S. A. Schuman->A.P. Ershov, 04.08.1976
Telegram, A.P. Ershov->T. B. Steel, Jr., 06.01.1976
Telegram, S. A. Schuman->A.P. Ershov, 04.08.1976
Letter, S. A. Schuman->M. Paul, 06.08.1976
Letter, A.P. Ershov->S. A. Schuman, 10.08.1976
Letter, M. Paul->A.P. Ershov, 18.08.1976
Letter, A.P. Ershov->S. A. Schuman, 19.08.1976
Letter, S. A. Schuman->Program Commitee Members, 15.09.1976
Letter, S. A. Schuman->J. M. Bennett, 20.09.1976
Telegram, A.P. Ershov->W. A. Wulf, 27.01.1976
Letter, A.P. Ershov->S. A. Schuman, 06.06.1977
Telegram, A.P. Ershov->Kees Koster, 13.05.1977with the flight number and the name of the meeting person
Telegram, A.P. Ershov->S. A. Schuman, 04.02.1977
Letter (hand-written), M. Nivat->A.P. Ershov, 24.01.1976About the forthcoming symposium in Novosibirsk: the author gives the themes of his two talks and asks whether it is possible to visit Samarkand, Bukhara and Tashkent after the symposium.
Telegram, Kees Koster->A.P. Ershov, 06.05.1977The author informs that he arrives to Moscow on 19 may and is coming to Novosibirsk to participate in the Conference preparation; asks to book plane tickets Moscow-Novosibirsk and back
Letter, A.P. Ershov->S. A. Schuman, 08.02.1977with remarks concerning the talks at the IFIP Working Conference
Letter, S. A. Schuman->A.P. Ershov, 10.12.1976
Written Address, 15.12.1976
Letter, S. A. Schuman->A.P. Ershov, 20.12.1976
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