TY  - JOUR
TI  - Dedication: Ted Bisztriczky
JO  - Canadian mathematical bulletin
PY  - 2009
SP  - 323
EP  - 326
VL  - 52
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2009-035-4/
DO  - 10.4153/CMB-2009-035-4
ID  - 10_4153_CMB_2009_035_4
ER  -