1. Si vedano, ad esempio, i Reports del gruppo diSlater (Massachusetts Institute of Technology) e quelli diLowdin (Quantum Chemistry Group, Uppsala).
2. Theoretical Physics in the Twentith Century (Interscence, New York) articolo diCasimir.
3. N. F. Mott eR. W. Gurney,Electronic Processes in Ionic Crystals, Oxford 1948.F. Seitz, Rev. Mod. Phys. 18, 384(1946), Rev. Mod. Phys. 26, 7 (1954)Color centers in alkali halide crystals I e II.Amelinckx,The effect of radiation on the mechanical properties (cap. IV) Ispra 1960.
4. Tosi,Difetti puntiformi e dislocazioni degli alogeneri alcalini, Studia Ghisleriana vol. II, 207 (1959).
5. Dobbs eJones,Theory and properties of solid Argon, Rep. Progr. Phys. 20, 516 (1957);G. Casanova,R. Fieschi,N. Terzi,Calculation of the vapour pressure ratio of Ne, Ar, Krand Xoisotopes in the solid state. Nuovo Cimento 18, 837 (1960).