1. P.B. Mackenzie and G.P. Lepage, Phys. Rev. Lett. 47, 1244 (1981).
2. O.V. Tarasov, A.A. Valadimirov, and A. Yu Zharkov, Phys. Lett. 93B, 429 (1980).
3. The amusing exercise of following the ß function solution and this second zero as a function of of was carried out in collaboration with D. Wyler.
4. For a review of experimental results see K.H. Mess and B.H. Wiik DESY preprint 82–001 (1982).
5. Jade Collaboration, W. Bartel et al., Phys. Lett. 119B, 239 (1982).