Letter, A.P. Ershov->A. R. Meyer, 21.04.1979 regrets that he refused to meet his real fellow colleagues because of signing the petition
Telegram (draft), A.P. Ershov->F. H. Sumner
Telegram, A.P. Ershov->M. M. Lehman, 02.02.1979
Letter, A.P. Ershov->F. L. Bauer, 21.04.1979regrets for being unable to change the date of the symposium and asks if a good person from his group can come
Letter, A.P. Ershov->M. Nivat, 02.02.1979informing of the dates of the Urgench Symposium, his plans and current research problems.
Letter, A.P. Ershov->J. McCarthy, 27.02.1979Request to specify the date of dispatching the parcel with documents and shipping mode.
Telegram, A.P. Ershov->R. Lucas, 05.03.1979Ershov arrives to Amsterdam on 10th of March. He expects that his request for financial support has been confirmed.
Telegram, A.P. Ershov->P. Burnev, 06.03.1979
Telegram, A.P. Ershov->H. W. Lawson, 06.03.1979
Letter, A.P. Ershov->J. Minker, 06.03.1979
Letter, A.P. Ershov->L. Oestling, 07.03.1979
Telegram, A.P. Ershov->M. M. Lehman, 26.04.1979
Letter, A.P. Ershov->F. G. Pagan, 11.04.1979
Letter, A.P. Ershov->K. W. Kennedy, 11.04.1979
Letter, A.P. Ershov->A. Brandwajn, 04.04.1979
Letter, A.P. Ershov->G. Chroust, 12.04.1979
Letter (draft), A.P. Ershov->V. Sgurev, 12.04.1979
Telegram, A.P. Ershov->M. Miyakawa, 18.04.1979
Telegram, A.P. Ershov->V. V. Davydov, 07.09.1979about practical problems
Telegram (draft), A.P. Ershov->L. Iliev, 23.04.1979(?)
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