Point group by the International Union of Crystallography (source code)

= Point group by the International Union of Crystallography
{c}
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Corporate author: <International Union of Crystallography>. Official Online Dictionary of Crystallography entry: https://dictionary.iucr.org/Point_group

The definition distinguishes general common-fixed-point symmetry from the lattice-preserving crystallographic subclass; the occurrence section discusses crystal, vector and molecular/site interpretations.