1. R. J. N. Phillips andW. Rarita:Phys. Rev.,139, B 1336 (1965);140, B 200 (1965).
2. G. Höhler, J. Baacke, H. Schaile andP. Sonderegger:Phys. Lett.,20, 79 (1966).
3. P. Bonamy, P. Borgeaud, S. Brehin, C. Bruneton, P. Falk-Vairant, O. Guisan, P. Sonderegger, C. Caverzasio, J. P. Guillaud, J. Schneider, M. Yvert, I. Mannelli, F. Sergiampietri andM. L. Vincelli: π−p→π0npolarization at 6 GeV/c, CERN preprint PS/5561/kl;New results on high-energy π−pcharge exchange scattering on polarized target, CERN preprint PS/5614/kl.
4. For exampleK. Gottfried andJ. D. Jackson:Nuovo Cimento,34, 735 (1964).
5. G. Cohen-Tannoudji andH. Navelet:Nuovo Cimento,37, 1511 (1965).