TY  - JOUR
AU  - V. F. Lazutkin
AU  - N. V. Svanidze
TI  - On that how the general ellipcity property of ray sistems for two mirror resonators is connected with their spectra
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1972
SP  - 111
EP  - 115
VL  - 25
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1972_25_a6/
LA  - ru
ID  - ZNSL_1972_25_a6
ER  -