1. We give here reference to some of the leading papers and books referred to in the text, in the period before the outbreak of the war in 1939. Extensive additional bibliographies are contained in the various books by the present author: Quantum Theory of Atomic Structure, Vol. 2 published by McGraw-Hill Book Co., Inc., in 1960, 1963, 1965, and 1966, respectively.
2. and Quantum Theory of Molecules and Solids, Vols. 1, 2, and 3, published by McGraw-Hill Book Co., Inc., in 1960, 1963, 1965, and 1966 respectively.
3. and Zeemaneffekt und Multiplettstruktur der Spektrallinien, (Springer, Berlin 1925).
4. Theorie der Beugung von Elektronen an Kristallen
5. Termaufspaltung in Kristallen