1. L. Pauling, E.B. Wilson Jr., Introduction to Quantum Mechanics with Applications to Chemistry (McGraw Hill Book Company Inc., New York, 1935)
2. D. Bohm, Quantum Theory (Prentice Hall Inc., New York, 1951)
3. G. Baym, Lectures on Quantum Mechanics (Westview Press, New York, 1969)
4. H.A. Bethe, R. Jackiw, Intermediate Quantum Mechanics (Westview Press, Boulder, 1986)
5. N.I. Gidopoulos, E.K.U. Gross, Electronic non-adiabatic states: towards a desity functional theory beyond the Born-Oppenheimer approximation. Philos. Trans. R. Soc. 372(2011), 20130059 (2014)