%0 Journal Article
%A L. Yu. Kolotilina
%T A class of optimally conditioned block $2\times2$ matrices
%J Zapiski Nauchnykh Seminarov POMI
%D 2002
%P 64-76
%V 284
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2002_284_a4/
%G ru
%F ZNSL_2002_284_a4