1. R. F. Streater and A. S. Wightman,PCT, Spin and Statistics, And All That (Benjamin/Cummings, Reading, 1978), Chap. 1. R.M.F. Houtappel, H. Van Dam, and E.P. Wigner,Rev. Mod. Phys. 37, 595 (1965). E.P. Wigner, “Unitary representations of the inhomogeneous Lorentz group including reflections,” inGroup Theoretical Concepts and Methods in Elementary Particle Physics, Feza Gursey, ed. (Gorden & Breach, New York, 1964), p. 37. J.J. Sakurai,Invariance Principles and Elementary Particles (Princeton University Press, Princeton, 1964), Chaps. 2 to 4.
2. T.D. Lee and C.N. Yang, “Elementary Particles and Weak Interactions,” BNL 443 (T91), Brookhaven National Laboratory, 1957.
3. V. Arunasalam,Am. J. Phys. 38, 1010 (1970);Phys. Essays 4, 596 (1991).
4. See E. Inonu, “Contraction of Lie groups and their representations,” and E. P. Wigner, “Unitary representations of the inhomogeneous Lorentz group including reflections,” inGroup Theoretical Concepts and Methods in Elementary Particle Physics, Feza Gursey, ed. (Gorden & Breach, New York, 1964), pp. 37, and 391.
5. H. Goldstein,Classical Mechanics (Addison-Wesley, Reading, 1957), Chaps. 6 to 8.