TY  - JOUR
AU  - Zhang, Ping
TI  - On $k$-strong distance in strong digraphs
JO  - Mathematica Bohemica
PY  - 2002
SP  - 557
EP  - 570
VL  - 127
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.2002.133957/
DO  - 10.21136/MB.2002.133957
LA  - en
ID  - 10_21136_MB_2002_133957
ER  -