@article{BASS_2005_30_1_a6,
     author = {D. Cvetkovi\'c},
     title = {Signless {Laplacians} and line graphs},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {85 - 92},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {2005},
     zbl = {1119.05066},
     url = {http://geodesic.mathdoc.fr/item/BASS_2005_30_1_a6/}
}