@article{PIM_2012_N_S_92_106_a8,
     author = {Shu-Guang Guo and Yan-Feng Wang},
     title = {Ordering {Cacti} {With} $n$ {Vertices} and $k$ {Cycles} by {Their} {Laplacian} {Spectral} {Radii}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {117 },
     publisher = {mathdoc},
     volume = {_N_S_92},
     number = {106},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_2012_N_S_92_106_a8/}
}