1. H. M. James and T. A. Keenan, J. Chem. Phys. 31, 12 (1959). One may refer to this article for further references up to 1959.JCPSA60021-9606
2. A typical reference may be quoted here: J. H. Colwell, E. K. Gill, and J. A. Morrison, J. Chem. Phys. 39, 635 (1963).JCPSA60021-9606
3. M. E. Rose, Elementary Theory of Angular Momentum (John Wiley & Sons, Inc., New York, 1957), p. 140, Eq. (8.1). On p. 141 there is a mistake: the factor 1/L! is not necessary. Accordingly, our definition of BL,M [Eq. (2.3)] is slightly different from his [Eq. (8.7)].
4. E. P. Wigner, Group Theory and Its Application to the Quantum Mechanics of Atomic Spectra, Translated by J. J. Griffin (Academic Press Inc., New York, 1959), p. 109. In this book the Euler angles always refer to the rotation of the coordinate system, whereas in (2.14) they refer to the rotation of the multipole. One should note also that the Euler angles are denned herewith respect to the space‐fixed axes, not to the rotating axes. We shall follow Wigner’s definition in the present series of papers.
5. F. C. Von der Lage and H. Bethe, Phys. Rev. 71, 612 (1947).PHRVAO0031-899X