1. Adiels, L. et al.: 1987,Z. Phys. C-Particles and Fields 35, 15.
2. Agrinier, B., Koechlim, Y., Parlier, B., Vasseur, J., Bland, C. J., Boella, G., Degli-Antoni, G., Dilworth, C., Scarsi, L., and Sironi, G.: 1965,Proc. Ninth Int. Conf. Cosmic Rays, Vol. I, Institute of Physics and the Physical Society, London, p. 331.
3. Bassompierre, G.: 1990, in J. Tran Than Van (ed.),?CP Violation in Particle Physics and Astrophysics?, XXVth, Anniversary of CP Violation Discovery, Kim Hup Lee Printing Co. Pte. Ltd., Singapore, p. 467.
4. Blecker, J. A. M., Burger, J. J., Deerenberg, A. J. M., Sheepmaker, A, Swanenburg, B. N., and Tanaka, Y.: 1967,Can. J. Phys.
5. Bransden, B. H., Evans, D., and Major, J. W.: 1973,The Fundamental Particles, p. 183.