International
Tables for Crystallography Volume B Reciprocal space Edited by U. Shmueli © International Union of Crystallography 2010 
International Tables for Crystallography (2010). Vol. B, ch. 1.5, p. 175
Section 1.5.1. List of abbreviations and symbols^{a}Departamento de Fisíca de la Materia Condensada, Facultad de Cienca y Technología, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain , and ^{b}Institut für Kristallographie, Universität, D76128 Karlsruhe, Germany 

Notes: (1) In crystallography, vectors are designated by lowercase boldface letters. With K we make an exception in order to follow the tradition of physics. A crystallographic alternative could be . (2) In crystallography, point coordinates or vector coefficients are written as columns. Therefore, columns are taken as `normal'. In order to distinguish rows from columns (the coefficients of vectors in reciprocal space, i.e. the Miller indices, and the basis of the crystal lattice are written as rows), rows are regarded as transposed columns and are thus marked by .
References
International Tables for Crystallography (2005). Vol. A, SpaceGroup Symmetry, edited by Th. Hahn, 5th ed. Heidelberg: Springer.Bradley, C. J. & Cracknell, A. P. (1972). The Mathematical Theory of Symmetry in Solids: Representation Theory for Point Groups and Space Groups. Oxford: Clarendon Press.
Cracknell, A. P., Davies, B. L., Miller, S. C. & Love, W. F. (1979). Kronecker Product Tables, Vol. 1, General Introduction and Tables of Irreducible Representations of Space Groups. New York: IFI/Plenum.