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. 64

Figure 1.4.4.2 

B. Souvignierd
[Figure 1.4.4.2]
Figure 1.4.4.2

Symmetry-element diagram for the space group P4bm (100) for the orthogonal projection along [001].