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Deleted "regular"---realized that Singleton proved such graphs are regular. |
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| year = 1998}}.
* {{citation
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|archiveurl = https://web.archive.org/web/20120424231252/http://repository.dl.itc.u-tokyo.ac.jp/dspace/handle/2261/6123
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* {{citation
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== External links ==
* [[Andries Brouwer|Brouwer]] and Haemers: [http://www.cwi.nl/~aeb/math/ipm.pdf Spectra of graphs]{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }}
* {{MathWorld|urlname=MooreGraph|title=Moore Graph}}
* {{MathWorld|urlname=Hoffman-SingletonTheorem|title=Hoffman-Singleton Theorem}}
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