Justification, 06.05.1963 of the trip to Poland for studying the works of Polish scientists in the automated programming
Letter, A.P. Ershov->Kohler, 29.08.1961with proposals on possible cooperation in the area of the development of special computer printing devices and an attempt to arrange for a meeting
Newspaperwith the "Buromaschinen" advertisement and Ershov's handwritten notes
Notesfor memory
Participant's form, Organizing Committee->A.P. Ershov, 26.03.1962of the International Colloquium in topical problems of computer engineering
Program, N. J. Lehmann->A.P. Ershov, 04.05.1962of the International Colloquium in topical problems of computer engineering
Program, 15.04.1961of A.Ershov's visit to Poland
Program, 01.02.1962of A.Ershov's visit to GDR
Program, 19.02.1962of A.Ershov's visit to Poland
Visit Programme, 18.06.1962
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