%0 Journal Article
%A V. F. Lazutkin
%A N. V. Svanidze
%T On that how the general ellipcity property of ray sistems for two mirror resonators is connected with their spectra
%J Zapiski Nauchnykh Seminarov POMI
%D 1972
%P 111-115
%V 25
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1972_25_a6/
%G ru
%F ZNSL_1972_25_a6