TY  - JOUR
AU  - Imrich, Wilfried
AU  - Klöckl, Werner
TI  - Factoring directed graphs with respect to the cardinal product in polynomial time
JO  - Discussiones Mathematicae. Graph Theory
PY  - 2007
SP  - 593
EP  - 601
VL  - 27
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a16/
LA  - en
ID  - DMGT_2007_27_3_a16
ER  -