Letter The author is sorry that his visit to Baden was cancelled and they could not meet; he has doubts that it will be possible to obtain permission for the addressee's visit to Novosibirsk on a short notice, but promices to do all that he can Date: 23.09.1964 Original document language: russian Authors: Andrei Petrovich Ershov Persons: Edward A. Feigenbaum Addressee: Michael A. Arbib