Letter (hand-written) Request to meet the author's graduate student N.Sukhomlin who implemented "Spartak" and "Raduga" systems. These systems seem to be a basis for a PhD thesis Date: 30.01.1976 Original document language: Russian Authors: Lev N. Korolev Persons: Vladimir A. Sukhomlin Addressee: Andrei Petrovich Ershov