Letter with attachment The author agtees with Ershov's critical remarks on his book co-authored by V. Mikhalevich and sends a copy of his article "Informatics: fundamental concepts of a new science" Date: 14.10.1986 Original document language: russian Authors: Yu. M. Kanygin Persons: V. S. Mikhalevich Addressee: Andrei Petrovich Ershov
