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

International Tables for Crystallography (2006). Vol. A. ch. 8.3, p. 739

Figure 8.3.6.1 

H. Wondratscheka*

a Institut für Kristallographie, Universität, D-76128 Karlsruhe, Germany
Correspondence e-mail: hans.wondratschek@physik.uni-karlsruhe.de

[Figure 8.3.6.1]
Figure 8.3.6.1

Square with `symmetry elements' [m_{x}], [m_{y}], [m_{d}], [m_{d'}] (mirror lines) and ♦ (fourfold rotation point). The vertices are numbered 1, 2, 3 and 4.