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Werke:
- Mathematical economics : held at Montecatini Terme, Italy, June 25 - July 3, 1986
- Periodic solutions of singular Lagrangian systems
- Geometric analysis and PDEs : lectures given at the C.I.M.E. summer school held in Cetraro, Italy, June 11 - 16, 2007
- Differential equations : a first course on ODE and a brief introduction to PDE