Information about the conference and invitation.

expressing concern with no reply to the invitation

expressing regret that Ershov could not come to the conference; confirming the possibility to include his paper in the Proceedings

Information about the conference. Enclosed is the Conference Preliminary Announcement

The author thanks for the kind words. He appreciates deeply the addressee's contribution to "Science and Computer". Philosophical note: "The years slip by at ever increasing rates and we should try to intersect our world lines soon."

The author received postcard from the addressee. He believes that his health recovery continues. The author trusts that the addressee has to play the most important role in an application of computers in the education system. He wishes all the best in 1986.

informing that invitation to M.R. Shura-Bura was sent

to the authors on paper submission

requesting to confirm participation in the conference