| Invitation, Yu. N. Marchuk->A.P. Ershov, 13.10.1983 to the Seminar
Letter, Organizing Committee->A.P. Ershov, 04.08.1983information about registration fee and request to send the copy of the paper
Letter, Organizing Committee->A.P. Ershov, 18.03.1983-29.03.1983Request to confirm participation in the Seminar and to give the title of the paper
Letter, Yu. N. Marchuk->A.P. Ershov, 03.02.1983-09.02.1983Invitation to take part in the Seminar and information for participants
Initial order | In alphabetical order | By date |
