Order of the Dean of the Mechanical and Mathematical Faculty of the Novosibirsk University expressing appreciation to A.P.Ershov for his longstanding fruitful contribution to scientific specialists training and in connection with his 50th anniversary. Date: 18.04.1981 Original document language: Russian Authors: Michael M. Lavrentiev Organizations: Novosibirsk State Univ. Persons: Andrei Petrovich Ershov
