This series draws from several sources, especially from the 1935 text by Pauling and Wilson, Introduction to Quantum Mechanics, reprinted by Dover Publications,1985, ISBN 978-0-486-64871-2; Cohen-Tannoudji, Diu and Laloe, Quantum Mechanics, Wiley, 1977, ISBN 0-471-16432-1; and I. N. Levine, Quantum Chemistry, 7th ed., Pearson, 2013, ISBN 978-0321803450.
