@article{10_2298_BMAT0429015G,
     author = {I. Gutman and W. Xiao},
     title = {Generalized inverse of the {Laplacian} matrix and some applications},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {15 },
     year = {2004},
     volume = {29},
     doi = {10.2298/BMAT0429015G},
     zbl = {1079.05055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/BMAT0429015G/}
}