The author wants to be informed whether the invited speakers from USSR and Bulgaria agree to submit their papers. Attachments contain forms of invitations.

asking to assign five phone numbers for the organization of the first line of electronic connection

on organization of a duplicating machine sector as a part of the Computing Center's Laboratory of experimental informatics

The President of the RAS congratulates V. Kotov with his 65th birthday, and wished good health, happiness, prosperity, and a lot of success.

Thanks for the received books; account of the Department of Programming affairs and family news; interesting calculations of Ershov's working time