1. Sommerfeld A. “Wave Mechanics”. New York: Academic. (1929).
2. Schiff L. “Quantum Mechanics”. New York: McGraw-Hill. (1949).
3. Cohen-Tannoudji C., Diu B. and Laloë F. “Quantum Mechanics”. vol I. New York: Wiley. (1977).
4. Messiah A. “Quantum Mechanics”. New York: Dover. (1999).
5. Griffiths D. W. “Introduction to Quantum Mechanics” second edition. Upper Saddle River, NJ: Prentice-Hall. (2014).