1. Proc. DPF Summer Study on Elementary particle physics and future facilities,1982
2. Proc. CERN-ECFA workshop on Feasibility of hadron colliders in the LEP tunnel,1984
3. Phys. Rev., Rapid Commun., to be published
4. Proc. 4th Topical Workshop on Proton—antiproton collider physics;Humpert,1984