@article{10_37236_932,
     author = {Vladimir Nikiforov},
     title = {Revisiting two classical results on graph spectra},
     journal = {The electronic journal of combinatorics},
     year = {2007},
     volume = {14},
     doi = {10.37236/932},
     zbl = {1111.05062},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/932/}
}