TY  - JOUR
AU  - Tardif, Claude
TI  - The chromatic number of the product of two graphs is at least half the minimum of the fractional chromatic numbers of the factors
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 2001
SP  - 353
EP  - 355
VL  - 42
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_2001__42_2_a11/
LA  - en
ID  - CMUC_2001__42_2_a11
ER  -