TY  - JOUR
AU  - J. Amjadi
TI  - An upper bound on the double domination number of trees
JO  - Kragujevac Journal of Mathematics
PY  - 2015
SP  - 133 
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KJM_2015_39_2_a1/
LA  - en
ID  - KJM_2015_39_2_a1
ER  -