= Kombinatorische Anzahlbestimmungen für Gruppen, Graphen und chemische Verbindungen by George Pólya
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{tag=Work by George Pólya}
{title2=1937}
By <George Pólya>. Acta Mathematica68,145–254. DOI: https://doi.org/10.1007/BF02546665
Primary scan: https://archive.ymsc.tsinghua.edu.cn/pacm_download/117/5571-11511_2006_Article_BF02546665.pdf
ChapterI, §16, printed page163, states the general cycle-index substitution theorem; the introduction motivates enumeration by rotations and chemical structures.
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