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

International Tables for Crystallography (2015). Vol. A, ch. 1.4, p. 65

Figure 1.4.4.3 

B. Souvignierd
[Figure 1.4.4.3]
Figure 1.4.4.3

Symmetry-element diagram for the space group P4 (75) for the orthogonal projection along [001].