TY  - JOUR
AU  - G. A. Gal'perin
TI  - The existence of nonperiodic and not everywhere dense billiard
JO  - Doklady Akademii Nauk
PY  - 1984
SP  - 18
EP  - 22
VL  - 275
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1984_275_1_a2/
LA  - ru
ID  - DAN_1984_275_1_a2
ER  -