A model for the process e + e - → [rho] 0 [epsilon] Gutbrod, Fritz Weiss, U. 1975 - DESY EPflicht - frei zugänglich
Scaling of [sigma] e+e- → hadrons in asymptotically nonfree theories Gutbrod, Fritz Kerler, W. 1975 - DESY EPflicht - frei zugänglich