1. A mechanical analogue for the study of betatron oscillations;Barbier,1956
2. Non-linearities in the AG synchrotron;Courant,1956
3. Anisochronisme des oscillations de phase du synchrotron;Gabillard;CERN-PS/RF 18,1957
4. Surface des diagrammes de phase;Gabillard;CERN-PS/RF 24,1958
5. Stability and amplitude ranges of two-dimensional non-linear oscillations, I and II;Hagedorn,1957