the latest facts – April of 1969

the latest facts – 1981

up to February 1973 (in Russian and in English).

Typewritteb version in Russian.

1931-1976

for “Mathematics. Mechanics” biographical reference book by “Naukova Doumka” publishers, Kiev

(In English.)

on A.P.Ershov's scientific and organizational activity in the years 1965-1967.

on scientific and administrative work