%0 Journal Article
%A A. P. Kalupin
%A V. L. Oleinik
%T A lemniscate as the spectrum of a~perturbed shift
%J Zapiski Nauchnykh Seminarov POMI
%D 2001
%P 74-91
%V 282
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2001_282_a6/
%G ru
%F ZNSL_2001_282_a6