1. R. E. Marshak, Riazuddin, and C. P. Ryan, Theory of Weak Interactions in Particle Physics, Wiley, New York, 1969;
2. L. Wolfenstein, Theory and Phenomenology in Particle Physics (edited by A. Zichichi ), Academic Press, New York, 1969;
3. E. Paul, in Elementary Particle Physics,Springer Tracts in Modern Physics, vol. 79.
4. P. K. Kabir, CP Puzzle, Academic Press, New York, 1968;
5. P. K. Kabir, CP-Violation (edited by C. Jarlskog ), World Scientific, Singapore, 1988.