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. 81

Figure 1.5.1.5 

H. Wondratscheka and M. I. Aroyob
[Figure 1.5.1.5]
Figure 1.5.1.5

Tetragonal lattices, projected along [[00\bar{1}]]. (a) Primitive cell P with a, b, c and the C-centred cells [C_{1}] with [a_{1}, b_{1}, c] and [C_{2}] with [a_{2}, b_{2}, c]. The origin for all three cells is the same. (b) Body-centred cell I with a, b, c and the F-centred cells [F_{1}] with [a_{1}, b_{1}, c] and [F_{2}] with [a_{2}, b_{2}, c]. The origin for all three cells is the same. The fractions [{\textstyle{1\over 2}}] indicate the height of the lattice points along the axis of projection.