TY  - JOUR
AU  - Nazari-Moghaddam, Sakineh
AU  - Chellali, Mustapha
TI  - A New Upper Bound for the Perfect Italian Domination Number of a Tree
JO  - Discussiones Mathematicae. Graph Theory
PY  - 2022
SP  - 1005
EP  - 1022
VL  - 42
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DMGT_2022_42_3_a19/
LA  - en
ID  - DMGT_2022_42_3_a19
ER  -