Plan
Abstract
Programme
Form
Letter, A.P. Ershov->B. I. Penkov, 21.05.1982inviting Bulgarian authors to contribute in collected articles on PC use in school educational process.
Memorandum, A.P. Ershov->A. S. Alekseev, 01.11.1983On sending Yu.A. Pervin to GDR to take part in the INFO 84 conference
Invitation, B. Sendov->A.P. Ershov, 13.05.1984to the Third Workshop "Problems of Informatics and its application in management, education and scientific research", Bulgaria, June 10-16, 1984
Minutes, 08.07.1984
Letter, notification, B. Sendov->A.P. Ershov, 20.08.1984
Notations, A.P. Ershov->G. A. Zvenigorodsky, 23.08.1984
Minutes, 23.08.1984-25.08.1984
Letter, S. Koshulev->A.P. Ershov, 26.12.1984
Direction, 19.02.1985
Letter, A. L. Petrova->V. A. Koptyug, 09.03.1985
Working plan, 11.10.1985
Working plan, 11.10.1985
Justification, 20.10.1985(?)
Working plan, 20.01.1986
Information, 19.06.1986
Working plan, 24.10.1986
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