Letter, A.P. Ershov->D. Aufenkamp, 01.06.1977
Telegram, A.P. Ershov->W. A. Wulf, 23.02.1977
Telegram, A.P. Ershov->B. A. Wichmann, 23.02.1977
Letter, 01.03.1977(?)Tourist information for the participants of the IFIP Working Conference in Novosibirsk
Telegram, A.P. Ershov->S. A. Schuman, 11.03.1977Ershov's opinion on unappropriateness of disqualification of invited specialists by cancellation of the event
Telegram, 16.03.1977
Telegram, A.P. Ershov->S. A. Schuman, 16.03.1977
Telegram, A.P. Ershov->J. Gruska, 16.03.1977
Letter, A.P. Ershov->R. D. Jenks, 14.04.1977The author asks to send Proceedings of Meeting on symbolic and algebraic calculations in exchange for their publications on theoretical and system programming.
Telegram, A.P. Ershov->B.G. Buchanan, 21.03.1977
Telegram, A.P. Ershov->H. F. Sherwood, 21.03.1977
Telegram, A.P. Ershov->E. A. Feigenbaum, 30.03.1977
Telegram, A.P. Ershov->J. J. Horning, 21.03.1977
Telegram, A.P. Ershov->S. A. Schuman, 21.03.1977
Telegram, A.P. Ershov->H. F. Sherwood, 24.03.1977
Letter, A.P. Ershov->J. T. Schwartz, 24.03.1977Request to send spare lamps for the overhead projector and a copy of Proceedings of the ACM Symposium with Prof. Dewar who is coming to Novosibirsk
Telegram, A.P. Ershov->B. A. Wichmann, 28.03.1977
Letter, A.P. Ershov->J. Kral, 28.03.1977
Letter, A.P. Ershov->E. Sandewall, 28.03.1977
Telegram, A.P. Ershov->W. Niegel, 29.03.1977
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