TY  - JOUR
AU  - Chvátal, Václav
TI  - A remark on a problem of Harary
JO  - Czechoslovak Mathematical Journal
PY  - 1970
SP  - 109
EP  - 111
VL  - 20
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100949/
DO  - 10.21136/CMJ.1970.100949
LA  - en
ID  - 10_21136_CMJ_1970_100949
ER  -