@article{KJM_2004_26_a2,
     author = {Damir Vuki\v{c}evi\'c and Ivan Gutman},
     title = {Laplacian matrix and distance in trees},
     journal = {Kragujevac Journal of Mathematics},
     pages = {19 },
     year = {2004},
     volume = {26},
     zbl = {1082.05061},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2004_26_a2/}
}