%0 Journal Article
%A Hitrik, Michael
%A Sjöstrand, Johannes
%T Non-Selfadjoint Perturbations of Selfadjoint Operators in Two Dimensions IIIa. One Branching Point
%J Canadian journal of mathematics
%D 2008
%P 572-657
%V 60
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2008-028-3/
%R 10.4153/CJM-2008-028-3
%F 10_4153_CJM_2008_028_3