@article{JAC_2011__34_4_a3,
     author = {Mohammadian, A. and Tayfeh-Rezaie, B.},
     title = {Graphs with four distinct {Laplacian} eigenvalues},
     journal = {Journal of Algebraic Combinatorics},
     pages = {671--682},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2011__34_4_a3/}
}