@article{03924831,
title = {On some graphic polynomials whose zeros are real.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {37(51)},
year = {1985},
pages = {29-32},
zbl = {0578.05050},
language = {en},
url = {http://dml.mathdoc.fr/item/03924831}
}
Gutman, Ivan. On some graphic polynomials whose zeros are real.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 37(51) (1985) pp. 29-32. http://gdmltest.u-ga.fr/item/03924831/