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. 56

Figure 1.4.2.3 

M. I. Aroyo,a G. Chapuis,b B. Souvignierd and A. M. Glazerc
[Figure 1.4.2.3]
Figure 1.4.2.3

Symmetry-element diagram for space group Fmm2 (42) (orthogonal projection along [001]).