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. 2.3, p. 245
Figure 2.3.3.5 ^{a}Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA, and ^{b}CABM & Rutgers University, 679 Hoes Lane, Piscataway, New Jersey 088545638, USA 

Figure 2.3.3.5
Let (a) be the original structure which contains three heavy atoms ABC in a noncentrosymmetric configuration. Then a Fourier summation, with coefficients, will give the Patterson shown in (b). Displacement of the Patterson by the vector BC and selecting the common patterns yields (c). Similarly, displacement by AC gives (d). Finally, superposition of (c) on (d) gives the original figure or its enantiomorph. This series of steps demonstrates that, in principle, complete structural information is contained in an SIR derivative. 