1. 5th Intern. Cyclotron Conf.;Hartwig,1969
2. Design of the extraction system for the AEG-compact cyclotron
3. Dietrich, Debus, Wolber and Konowalczyk, to be published.
4. 5th Intern. Cyclotron Conf.;Liesem,1969
5. A method for the resonance-free, low-loss, beam extraction from cyclotrons