%0 Journal Article
%A V. A. Derkach
%A M. M. Malamud
%A È. R. Tsekanovskii
%T Sectorial extensions of a positive operator, and the
%J Doklady Akademii Nauk
%D 1988
%P 537-541
%V 298
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_298_3_a4/
%G ru
%F DAN_1988_298_3_a4