to the author's compositions.

to the author's abstract.

The addressee is asked to take part in the meeting of the Science-technical counsil of the State Committee on Computing Machinery and Informatics. The meeting is planned to hold on the 16 or 23 of September.

The request to fill in an enclosed form. The biographical information will be included in reference-book "Who is who in Soviet and Polish science, technics and culture."

Organizing Commitee of the seminar "Logic at Botik'89" informs of a seminar status modification: it will be international and Proceedings will be published at a foreign publishing house. Thus a participant must have a "permitting" letter from his organization.

Institute of Applied Mathematics of the USSR Academy of Sciences informs that magazine "Mathematical simulation" will be issued by publishing house "Nauka" from the 1st of January 1989.

to an express documentation with request to acknowledge the receipt of it.

The addressee is asked to answer to the Great Britain Royal Society proposal about an enlargement of connections and cooperation between scientists of England and our country.