International
Tables for
Crystallography
Volume A
Space-group symmetry
Edited by M. I. Aroyo

International Tables for Crystallography (2015). Vol. A, ch. 1.5, p. 95

Figure 1.5.4.1 

B. Souvignier,c G. Chapuisd and H. Wondratscheka
[Figure 1.5.4.1]
Figure 1.5.4.1

Symmetry-element diagram for space group P23 (195).