| Article, 12.12.1980 "Types in a Mixed Language System", by Ph.Darondeau, P. Le Guernic, M.Raynal.
Review, 07.01.1981
Letter with attachment, V. D. Soloviev->A.P. Ershov, 22.01.1981
Article, 05.10.1980
Review, 08.02.1977
Letter with attachment, V. B. Borschev->A.P. Ershov, 29.05.1981
Transcrption
Discussion
Letter with attachment, A. Sukhobokov->A.P. Ershov, 23.08.1982
Working Notes, A.P. Ershov->A. Sukhobokov
Copy of the Article, 13.12.1982
Letter with attachment, A. Sukhobokov->A.P. Ershov, 30.10.1982
Letter with attachment, A. S. Markov->A.P. Ershov, 08.08.1983
Letter with attachment, 16.12.1983
Article, 25.02.1985
Abstract, 28.10.1985
Letter with attachment, 20.02.1986
Dissertation
Letters with attachment, I.A. Sheremet->A.P. Ershov, 23.01.1987-10.08.1987
Article, 09.12.1997
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