International
Tables for Crystallography Volume C Mathematical, physical and chemical tables Edited by E. Prince © International Union of Crystallography 2006 
International Tables for Crystallography (2006). Vol. C, ch. 2.7, p. 114


Figure 2.7.1.3
Differentiation between orientation contrast and diffraction contrast in types of topograph images, (b)–(e), of a crystal surface (a). 