Ukrainian Mathematical JournalSeptember 1981, Volume 33, Issue 5, pp 465–466 | Cite asOptimal problems on eigenvaluesAuthorsAuthors and affiliationsV. G. LitvinovArticleReceived: 18 October 1978 16 Downloads This is a preview of subscription content, log in to check access.Copyright information© Plenum Publishing Corporation 1982Authors and AffiliationsV. G. Litvinov11.Institute of MechanicsAcademy of Sciences of the Ukrainian SSRUSSR