Geodesic
On the common-neighborhood energy of a graph
Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles, Tome 36 (2011) no. 1 
A. Alwardi; N. D. Soner; I. Gutman. On the common-neighborhood energy of a graph. Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles, Tome 36 (2011) no. 1. http://geodesic.mathdoc.fr/item/BASS_2011_36_1_a3/
@article{BASS_2011_36_1_a3,
     author = {A. Alwardi and N. D. Soner and I. Gutman},
     title = {On the common-neighborhood energy of a graph},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {49 - 59},
     year = {2011},
     volume = {36},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BASS_2011_36_1_a3/}
}
TY  - JOUR
AU  - A. Alwardi
AU  - N. D. Soner
AU  - I. Gutman
TI  - On the common-neighborhood energy of a graph
JO  - Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles
PY  - 2011
SP  - 49 
EP  -  59
VL  - 36
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/BASS_2011_36_1_a3/
ID  - BASS_2011_36_1_a3
ER  - 
%0 Journal Article
%A A. Alwardi
%A N. D. Soner
%A I. Gutman
%T On the common-neighborhood energy of a graph
%J Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles
%D 2011
%P 49 - 59
%V 36
%N 1
%U http://geodesic.mathdoc.fr/item/BASS_2011_36_1_a3/
%F BASS_2011_36_1_a3

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

We introduce the concept of common-neighborhood energy $E_{CN}$ of a graph $G$ and obtain an upper bound for $E_{CN}$ when $G$ is strongly regular. We also show that $E_{CN}$ of several classes of graphs is less than the common-neighborhood energy of the complete graph $K_n$\,.