TY  - JOUR
AU  - Zelinka, Bohdan
TI  - A remark on graph operators
JO  - Mathematica Bohemica
PY  - 1999
SP  - 83
EP  - 85
VL  - 124
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.1999.125973/
DO  - 10.21136/MB.1999.125973
LA  - en
ID  - 10_21136_MB_1999_125973
ER  -