International
Tables for Crystallography Volume B Reciprocal space Edited by U. Shmueli © International Union of Crystallography 2006 
International Tables for Crystallography (2006). Vol. B, ch. 4.6, p. 504
Figure 4.6.3.14 ^{a}Laboratory of Crystallography, Swiss Federal Institute of Technology, CH8092 Zurich, Switzerland 

Figure 4.6.3.14
Scaling symmetry of a pentagram superposed on the Penrose tiling. A vector pointing to a corner of a pentagon (star) is mapped by the rotoscaling operation (rotation around and dilatation by a factor ) onto the next largest pentagon (star). 