@article{10_1007_s10587_013_0048_7,
     author = {Guo, Ji-Ming and Li, Jianxi and Shiu, Wai Chee},
     title = {On the {Laplacian,} signless {Laplacian} and normalized {Laplacian} characteristic polynomials of a graph},
     journal = {Czechoslovak Mathematical Journal},
     pages = {701--720},
     publisher = {mathdoc},
     volume = {63},
     number = {3},
     year = {2013},
     doi = {10.1007/s10587-013-0048-7},
     mrnumber = {3125650},
     zbl = {06282106},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0048-7/}
}