1. BhabhaThe Theory of the Elementary Particles and their Interactions, Chapter 4 (in course of publication).
2. DiracProc. Roy. Soc., 1945, A,183, 284–95.
3. Harish-ChandraIbid.,, 1947, A189, 372–401.
4. MurnaghanThe Theory of Group Representations, Chapter 12, Baltimore: The Johns Hopkins Press, 1938.
5. WignerAnnals of Mathematics, 1939,40, 149–204.