| Invited presentation at SPT2011, Otranto, Italy [June 2011] |
| Organizer of the mini-symposium "Aubry-Mather theory" in Snowbird [May 2011], together with B. Mramor |
| Invited presentation at the "Complexity and patterns" workshop at Twente University [Nov. 2010] |
| Minisymposium "Coherent structures in Hamiltonian lattices" at "SIAM applications of Dynamical Systems", Snowbird, USA [2009] |
| Visit to Prof. G. Benettin, Padua, Italy [2009] |
| Workshop "Anderson localization in nonlinear and many-body systems", Max Planck Dresden, Germany [2009] |
| Workshop "KAM theory and its applications", Lorentz Center Leiden, The Netherlands [2008] |
| DynamIC colloquium , Imperial College London, UK [2008] |
| Workshop "Lattice models'', Bath University, UK [2008] |
| Colloquium talk at Leiden University, The Netherlands [2008] |
| Colloquium talks at CWI Amsterdam and Groningen University, The Netherlands [2007] |
| Organiser of workshop "Hamiltonian Lattice Dynamical Systems", Lorentz Center, Leiden, The Netherlands [October 15-19, 2007] |
| Workshop "Geometric Mechanics", BIRS Banff, Canada [2007] |
| Analysis colloquium, University of Zurich [2007] |
| Mathematics colloquium, University of Santa Cruz, USA [2007] |
| Lectures on KAM theory in UK Dynamical Systems Graduate School "Hamiltonian Dynamics", Imperial College London, UK [2006] |
| Conference ``Computation and Topology in Dynamics", Lorentz Center Leiden [2006] |
| Mathematics colloquium in Canterbury and Warwick, UK [2005] |
| Workshop ``Oscillatory Motions in Hamiltonian Systems'', ENOC, Eindhoven [2005] |
| Visit to Prof. D. Bambusi, Universita degli Studi di Milano, Milan, Italy [2005] |
| Visit to Dr. F. Fasso, Universita di Padova, Padua, Italy [2005] |
| DynamIC colloquium, Imperial College London, UK [2003] |
| Minisymposium "The FPU problem'' at "SIAM Applications of Dynamical Systems", Snowbird, USA [2003] |
| 1 month visit to Prof. G. Gallavotti at the Universita di Roma 1, Rome, Italy [2002] |
| Lecturer at the Institut Teknologi Bandung, Bandung, Indonesia [2001] |
| Conference ``Symmetry and Perturbation Theory 2001'', Cala Gonone, Italy [2001] |
| Summer School ``Geometric Mechanics: MASIE'', Peyresq, France [2000] |