Online Dictionary of Crystallography by International Union of Crystallography / Miller indices (11 December 2017 revision)

Entry in Online Dictionary of Crystallography by International Union of Crystallography. Institutional reference issued and hosted by the International Union of Crystallography; no individual byline is assigned. Last edited 11 December 2017; no original publication date is established.

Online text: dictionary.iucr.org/Miller_indices

Cited passages: Definition, Direct space, plane intercepts and primitive versus centered indexing; Definition, Reciprocal space, normal direction and inverse spacing. The entry uses reciprocal-length basis vectors; an angular reciprocal convention introduces a factor of $2\pi$.