International
Tables for
Crystallography
Volume A
Space-group symmetry
Edited by Th. Hahn

International Tables for Crystallography (2006). Vol. A. ch. 2.2, p. 40

Figure 2.2.17.1 

Th. Hahna* and A. Looijenga-Vosb

a Institut für Kristallographie, Rheinisch-Westfälische Technische Hochschule, Aachen, Germany, and bLaboratorium voor Chemische Fysica, Rijksuniversiteit Groningen, The Netherlands
Correspondence e-mail:  hahn@xtl.rwth-aachen.de

[Figure 2.2.17.1]
Figure 2.2.17.1

The two line groups (one-dimensional space groups). Small circles are reflection points; large circles represent the general position; in line group [{\scr p}1], the vertical bars are the origins of the unit cells.