@article{10_2298_BMAT0328001G,
     author = {I. Gutman},
     title = {Some properties of {Laplacian} eigenvectors},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {1 },
     publisher = {mathdoc},
     volume = {28},
     year = {2003},
     doi = {10.2298/BMAT0328001G},
     zbl = {1051.05059},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/BMAT0328001G/}
}