At a seminar.
B.A.Kushner, N.M.Nagorny, A.A.Markov.

Vinogradov, Markov, Nikolski.

V.I. Khomich, A.A.Markov, N.M.Nagorny, N.V.Petri


At the Obninsk Conference, 1971.

Lecture theatre 14-08, Moscow University


With G.B.Marandzhan,
Obninsk train Station, 1971.
A.G.Dragalin, A.A.Markov, E.Yu.Nogina at the Mathematical Logic Department, Moscow University