Character reference in connection with the trip to Austria for participation in the IFIP Algol Working Group meeting as the USSR representative and for participation in the IFIP Symposium; the trip to France to the conference held by the B. Pascal Institute and for studying the works in programming at the Gumbolt Center of the University of Grenoble Date: 01.01.1964 Original document language: Russian Authors: V. D. Kudrin, Guri I. Marchuk, Igor Maksimovich Bobko Persons: Andrei Petrovich Ershov