TY  - JOUR
AU  - Jan Florek
TI  - Billiards and the five distance theorem
JO  - Acta Arithmetica
PY  - 2009
SP  - 229
EP  - 239
VL  - 139
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/aa139-3-2/
DO  - 10.4064/aa139-3-2
LA  - en
ID  - 10_4064_aa139_3_2
ER  -