TY  - JOUR
AU  - Chartrand, Gary
AU  - Gavlas, Heather
AU  - Schulz, Kelly
AU  - Winters, Steve J.
TI  - On strong digraphs with a prescribed ultracenter
JO  - Czechoslovak Mathematical Journal
PY  - 1997
SP  - 83
EP  - 94
VL  - 47
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMJ_1997__47_1_a5/
LA  - en
ID  - CMJ_1997__47_1_a5
ER  -