TY  - JOUR
AU  - Petrović Vojislav
TI  - On unavoidable subdigraphs of 

 tournaments
JO  - Novi Sad Journal of Mathematics
PY  - 1987
SP  - 229
EP  - 238
VL  - 17
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NSJOM_1987_17_1a_16/
ID  - NSJOM_1987_17_1a_16
ER  -