@article{BASS_2016_41_a1,
     author = {Ivan Gutman},
     title = {On two degree-and-distance-based graph invariants},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {21 },
     publisher = {mathdoc},
     volume = {41},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASS_2016_41_a1/}
}