@article{10_37236_212,
     author = {L\'aszl\'o Babai and Barry Guiduli},
     title = {Spectral extrema for graphs: the {Zarankiewicz} problem},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/212},
     zbl = {1186.05079},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/212/}
}