%0 Journal Article
%A Andrzej Pokrzywa
%T Method of orthogonal projections and approximation of the spectrum of a bounded operator
%J Studia Mathematica
%D 1979
%P 21-29
%V 65
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm-65-1-21-29/
%R 10.4064/sm-65-1-21-29
%G en
%F 10_4064_sm_65_1_21_29