Editing Expander graph (section)

===Textbooks and surveys===
* {{cite book|title=The Probabilistic Method|first1=N.|last1=Alon|author1-link=Noga Alon|first2=Joel H.|last2=Spencer|author2-link=Joel Spencer|publisher=John Wiley & Sons|year=2011|edition=3rd|chapter=9.2. Eigenvalues and Expanders}}
* {{Citation | last=Chung |first=Fan R. K. | title=Spectral Graph Theory | series=CBMS Regional Conference Series in Mathematics | volume=92 | publisher=[[American Mathematical Society]] | year=1997 | isbn=978-0-8218-0315-8}}
* {{Citation | first1=Guiliana |last1=Davidoff | first2=Peter | last2=Sarnak | first3=Alain | last3=Valette | title=Elementary number theory, group theory and Ramanujan graphs|title-link=Elementary Number Theory, Group Theory and Ramanujan Graphs | publisher=[[Cambridge University Press]] | series=LMS student texts | volume=55 | year=2003 | isbn=978-0-521-53143-6}}
* {{Citation | first1=Shlomo | last1=Hoory | first2=Nathan | last2=Linial | author2-link = Nati Linial | first3=Avi | last3=Wigderson | author3-link = Avi Wigderson | title=Expander graphs and their applications | journal= Bulletin of the American Mathematical Society |series=New Series | volume=43 | issue=4 | pages=439–561 | url=http://www.cs.huji.ac.il/~nati/PAPERS/expander_survey.pdf | year=2006 | doi = 10.1090/S0273-0979-06-01126-8| doi-access=free }}
* {{Citation | first1=Mike |last1=Krebs | first2=Anthony | last2=Shaheen | title=Expander families and Cayley graphs: A beginner's guide | publisher=Oxford University Press | year=2011 | isbn=978-0-19-976711-3}}