%0 Journal Article
%A Yu. Sh. Abramov
%T Duality in extremal problems generated by spectral problems for operator pencils
%J Doklady Akademii Nauk
%D 1980
%P 777-780
%V 255
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1980_255_4_a0/
%G ru
%F DAN_1980_255_4_a0