The author thanks for a warm reception in Novosibirsk and informs on his new address.

The author thanks for guidance and assistance. He sends reprints of his new article, discusses possibilities of translation and publication of an article on mixed computations.

with greetings from Japan.

The author thanks for books sent to him. He tells on development of computerization in Japan and particularly on using laser printers for printing hieroglyphs.

Letter of recommendation for Prof. K.Ikeda who goes to Novosibirsk.

The author asks to print his article in Acta Informatica.

Congratulations to Ershov on occasion of the Krylov Prize award and of the election to the USSR Academy of Sciences. Condolence on occasion of Zvenigorodsky's death. The author relates on his current affairs, he is ready to assist in obtaining a visa.

The author is thankful for a letter and a photo, which has evoked remembrance of ten years ago. He is anxious on Ershov's health and asks him to be careful.

The author is planning a short visit to USSR and hopes to meet A.Ershov. He is sending a thesis of his supposed dissertation. He also expresses his congratulations on entering G.Marchuk into the duty of Ac.Sci. President.

The author sends his congratulations for the Women's Day.

The author plans to visit Kazan, Novosibirsk, Riga and Leningrad in the course of his supposed travel to USSR. He asks Ershov to support his invitation.

The author is lucky to be selected as an Exchanged Scientist for the travel to the USSR. He encloses his detailed schedule and informs on shortening his visit to Novosibirsk.

Computing Center agrees to accept the addressee in July 1987.

The author thanks for the telegram.

The author exposes his itinerary in the USSR. A hand-written inscription by Ershov: "The program and acceptance are to be prepared by Ochakovskaya".

of M. Miyakawa in the Computer Center.

on sending to Japan technical literature purchased by M. Miyakawa in Novosibirsk.

with the author's impressions on his visit to the USSR.

of the FCT-87 conference sent by M. Miyakawa to A. Ershov.

"Construction of Efficient Decision Trees" delivered to the FTC 87 conference. (The text presented to Ershov.)