with the "Buromaschinen" advertisement and Ershov's handwritten notes

for memory

of A.Ershov's visit to Poland

with proposals on possible cooperation in the area of the development of special computer printing devices and an attempt to arrange for a meeting

of A.Ershov's visit to GDR

of A.Ershov's visit to Poland

of the International Colloquium in topical problems of computer engineering

of the International Colloquium in topical problems of computer engineering

of the trip to Poland for studying the works of Polish scientists in the automated programming