@article{mohar1991lsg,
  author = {Mohar, B.},
  interhash = {571f21e55ceba47912e7729b561be348},
  intrahash = {3d63879e040c1a1ccd239ffaffb0189a},
  journal = {Graph Theory, Combinatorics, and Applications},
  pages = {871--898},
  publisher = {New York: Wiley},
  title = {{The Laplacian spectrum of graphs}},
  volume = 2,
  year = 1991
}

@article{mohar1997sal,
  author = {Mohar, B.},
  interhash = {04fbb3036b34072e6d27e7a84cfafb87},
  intrahash = {df49696a4bc6df9a662c95fe8f713beb},
  journal = {Graph Symmetry: Algebraic Methods and Applications},
  pages = {227--275},
  publisher = {Kluwer},
  title = {{Some applications of Laplace eigenvalues of graphs}},
  volume = 497,
  year = 1997
}