1. C. Pisani, R. Dovesi, C. Roetti, Lecture Notes in Chemistry, vol. 48: Hartree–Fock Ab Initio Treatment of Crystalline Systems, Springer, Berlin, 1988.
2. R. Dovesi, C. Pisani, C. Roetti, M. Causa, V.R. Saunders, crystal88, Quantum Chemistry Program Exchange, Program No. 577, Indiana University, Bloomington, IN, 1989
3. R. Dovesi, V.R. Saunders, C. Roetti, crystal92 User Document, University of Torino, Torino, and SERC Daresbury Laboratory, Daresbury, 1992
4. R. Dovesi, V.R. Saunders, C. Roetti, M. Causa, N.M. Harrison, R. Orlando, E. Apra, crystal95 User's Manual, University of Torino, Torino, 1996.
5. R.M. Dreizler, E.K.U. Gross, Density Functional Theory, Springer, New York, 1990.