@article{KJM_2010_34_a13,
     author = {Muhuo Liu},
     title = {On the {Laplacian} spread of trees and unicyclic graphs},
     journal = {Kragujevac Journal of Mathematics},
     pages = {151 },
     publisher = {mathdoc},
     volume = {34},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2010_34_a13/}
}