TY  - JOUR
AU  - Yu. G. Safarov
TI  - Asymptotics of the spectrum of a boundary-value problem with periodic billiard trajectories
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1987
SP  - 88
EP  - 90
VL  - 21
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1987_21_4_a16/
LA  - ru
ID  - FAA_1987_21_4_a16
ER  -