on finance problems connected with the journey to Symposium. The subject of the author's (possible) paper is also indicated.

Plans are described concerning travels of J.Schwarz, J.Cocke and F.Allen in August-September 1975, including participation in the Novosibirsk Symposium.

The author will probably take part in the Symposium.

appreciating B.Marks' coming to the Symposium.

with the title of the lecture to be presented at the Symposium. A Ershov's paper could not be included into the curent issue of "Acta Politechnica" and will be printed later.

on impossibility to participate in the Symposium.

Eight letters (standardized though personal) informing on organizational issues of Symposium, on representing and publishing papers. Hotel and other accomodations in Novosibirsk are indicated as well as their rates.

Six letters (standardized though personal) informing on organizational issues of Symposium, on representing and publishing papers.

with technical details as to publishing the addressee's paper in Proceedings of the Symposium..

The author has not yet got any formal invitation to the Symposium.

The author wants to participate in the Symposium and to give a talk. He informs also on plans of his other travels.

The author thanks for the extended information about the Symposium. He is glad to take part in it, will bring his paper in the enough number of copies.

with a request of inviting D.Nadenik to the Symposium.

The author informs that he has sent 40 copies of his paper.

The author informs that he regretfully will not be able to attend the Symposium.

J.Schwartz is unable to attend the Symposium since the visa is not yet issued. The paper is sent separately.

B.Lorho is worried about his sojourn in Novosibirsk. IRIA asks to promote issuing the French visa through intermediation of the French Embassy.

The request about participation of D.Nadenik in the Symposium is repeated.

The author communicates the title of his talk. No flight booking is OK as yet.