Letter Notification of the author’s intention to come to the G.I. Kozhukhin memorial seminar and to discuss and settle all questions during the visit. Date: 16.03.1973 Original document language: russian Authors: Yuri A. Pervin Persons: G. I. Kozhukhin, Yaroslav K. Lyubimtsev Addressee: Andrei Petrovich Ershov
