@article{GDZPPN002537192,
title = {The main part of the spectrum, divisors and switching of graphs.},
journal = {Publications de l'Institut Math\'ematique [Elektronische Ressource]},
volume = {38},
year = {1978},
pages = {31-38},
zbl = {0423.05028},
language = {en},
url = {http://dml.mathdoc.fr/item/GDZPPN002537192}
}
Cvetkovic, D.M. The main part of the spectrum, divisors and switching of graphs.. Publications de l'Institut Mathématique [Elektronische Ressource], Tome 38 (1978) pp. 31-38. http://gdmltest.u-ga.fr/item/GDZPPN002537192/