1. Proc. XVII Rencontre de Moriond;Mueller,1982
2. Proc. XIII Intern. Symp. on Multiparticle dynamics;Brodsky,1982
3. Diffractive Excitation in Quantum Chromodynamics
4. DPF Meeting;Heppelmann,1987
5. Proc. NATO Research Workshop on Hard hadronic processes;Bjorken,1987