Act, 23.11.1983
Act, 07.03.1988
Agenda, 21.03.1984
Announcement, 12.02.1988
Announcement, 05.12.1983of Ershov's talk "On the subject of informatics and its connection to mathematics" at the SMS session
Announcement, 06.03.1987
Bulletin, 25.03.1983(?)
Covering letter, 20.01.1984
Covering letter, 07.03.1988
Covering letter, 11.02.1988
Explanatory Note, 11.02.1988
Extract, 05.12.1983
Extract, 07.03.1988
Invitation, 18.03.1972
Invitation, 21.02.1973
Invitation Card, 23.12.1986
Invitation Card, 26.03.1987
Invitation card, 15.04.1988
Letter, S. L. Sobolev->A.P. Ershov, 19.06.1981
List, 11.02.1988
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