TY  - JOUR
AU  - Tabachnikov, Serge
TI  - On three-periodic trajectories of multi-dimensional dual billiards
JO  - Algebraic and Geometric Topology
PY  - 2003
SP  - 993
EP  - 1004
VL  - 3
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2003.3.993/
DO  - 10.2140/agt.2003.3.993
ID  - 10_2140_agt_2003_3_993
ER  -