1. S. Gasiorowicz, Quantum Physics, 3rd edn. ISBN: 978-0-471-05700-0 (2003)
2. L.I. Sciff, Quantum Mechanics (McGraw-Hill Book Co., New York, 1955)
3. E. Merzbacher, Quantum Mechanics (Wiley, New York, 1955)
4. D. Bohm, Quantum Theory (Prentice-Hall Inc., Englewood Cliffs, 1951)
5. A. Messiah, Quantum Mechanics I (North-Holland Publ. Co., Amsterdam, 1961)