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Figure 9
Special values of the intrinsic translation vector of the nr,s σ-PO. [R \in \bb Z]: green lines; [s \in \bb Z]: yellow lines; [\textstyle r = {n\over 2} + {m\over 2}], [\textstyle s = {n\over 2} - {m\over 2}] with [n,m \in \bb Z]: blue crosses. Lattice nodes are represented by black dots. The set of translation vectors to be considered are represented by a red rectangle. At the dotted lines the set opens, at the continuous lines it is closed. An intrinsic translation vector [(s{\bf a} + r{\bf c})/2] and its components [s{\bf a}/2] and [r{\bf c}/2] are indicated.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 73| Part 1| February 2017| Pages 65-73
https://doi.org/10.1107/S2052520616018291
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