1. Ab-initio Calculations of the Properties of Crystalline Materials, ed. by C. Pisani. Lecture Notes in Chemistry, vol. 67 (Springer, Berlin, 1996)
2. P. Fulde, Electron Correlations in Molecules and Solids, 3rd edn. Springer Series in Solid State Sciences, vol. 100 (Springer, Berlin, 1995)
3. M. Springborg, Methods of Electronic Structure Calculations (Wiley, Chichester 2000)
4. R.A. Evarestov, V.P. Smirnov, Site Symmetry in Crystals: Theory and Applications, 2nd edn. Springer Series in Solid State Sciences, vol. 108 (Springer, Berlin, 1997)
5. V.R. Saunders, R. Dovesi, C. Roetti, R. Orlando, C.M. Zicovich-Wilson, N.M. Harrison, CRYSTAL-2003 Users Manual (University of Torino, Torino, 2003).
http://www.crystal.unito.it