Letter Regretting Ershov not having the opportunity to talk to L.D. Raikov about future plans; hopes for continued collaboration with NICEVT (Research Center of Computer Techniques) Date: 18.12.1973 Original document language: russian Authors: Unknown Author Persons: Leonid D. Raikov, Sergei S. Kamynin Addressee: Andrei Petrovich Ershov
