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Add details to lehmer citation, use preferred form of his name, fix ''x''<sub>''i''</sub> to shorter ''x<sub>i</sub>''. |
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==References==
{{Reflist|refs=
<ref name="lehmer">
{{Citation
| last=Lehmer
| first=D.H.
|
| title=Teaching combinatorial tricks to a computer
| journal=Proc. Sympos. Appl. Math. Combinatorial Analysis, Amer. Math. Soc.
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| year=1960
| pages=179–193
| doi=
| mr=0113289
}}
| |||