| Report on the 2nd ELS SS session (June 3-5, 1985, Kalinin)
Reporton the 3rd ELS SS session (June 3-5, 1986, Kishinev)
Letter, A.P. Ershov->N.P. Laverov, 14.10.1988asking permission to hold a joint session of the ELS and CSSP special subgroups on the basis of The Institute of Mathematics of Kirghiz AS, and to assist in accommodating 50 nonresident participants in the 1st decade of June 1989
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