1. See for exampleI. Bars et al.: SLAC-Pub. 1522 (1974) in which the q2-dependence was emphasized just after the discovery of the Ψ particles.
2. P. J. O ’Donnell:Phys. Rev. Lett.,36, 177 (1976).
3. B. Jean-Marie andW. Wallraff: talks given at theInformal Meeting on Spear and Doris expeir- ments, Ecole Normale Supérieure, Laboratoire de Physique Théorique, Paris, January 1976.
4. T. N. Pham, B. Pire andT. N. Truono (Centre de Physique Théorique, école Polytechnique, preprint);J. Schwinger, K. A. Milton, W. Y. Tsai andL. L. De Raad:Phys. Rev. D,12, 2617, 1620 (1975).
5. V. Barger andR. J. N. Phillips:Phys. Lett.,58 B, 433 (1976).