TY  - JOUR
AU  - Marcin Krzywkowski
TI  - A modified hat problem
JO  - Commentationes Mathematicae
PY  - 2010
SP  -  121
EP  - 126
VL  - 50
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v50i2.5178/
DO  - 10.14708/cm.v50i2.5178
LA  - pl
ID  - 10_14708_cm_v50i2_5178
ER  -