Invitations since 1994 (for at least a week - Congresses excluded)

University of Stuttgart (Allemagne) Aug. 94, Nov.-Dec. 1995

University of Ferrara (Italie) May 1996, May 1997

University of Hong-Kong, Sept 1996

University of Stuttgart, Oct-Dec 1997

Inst. Appl. Math & Cybernetics, Nizhny Novgorod, Nov. 98

Cambridge University (UK) Isaac Newton Institute, Aug. 2001

Univ. de Milano Bicocca, Ist. di Alta Matematica, Nov. 2002

Technical University of Denmark, Lyngby, Danemark (June 2003)

Fields Institute, Toronto, Canada (dec. 2003)

Tata Institute, Bangalore, India (Jan 2005)

Univ. of Illinois - Chicago and Purdue Univ. (West-Lafayette) USA (April 2005)

VPNA - SISSA Spring School, Trieste, Italy, May 2005

St Etienne de Tinée, France. Summer school. Aug-Sept 2005

North British Differential Equations Seminar (Dundee, Edinburgh, Heriot-Watt, Glasgow, Strathclyde, St. Andrews, Keele, Leeds, Liverpool, Manchester, Newcastle). October 2006

CIRM, Luminy, France. Research in pair with M.Haragus (Feb 2008)

Nonlinear Summer School, Peyresq, France, Sept 2008 (4h30 lectures)

Hamiltonian PDEs and Dynamical Systems, Univ. Napoli, May 2009 (3-4 lectures)

Winter School, Dynamics and Partial Differential Equations. St Etienne de Tinée, Jan 2010 (3h lectures)

Univ. East Anglia, Norwich, (UK), june 2010

RTNS2012, Univ. Navarra, Pamplona, Spain, Jan 2012 (10h lectures)

Nonlinear Summer School, Peyresq, France, Août 2012 (4h30 lectures)

Winter School, Dynamics and Partial Differential Equations. St Etienne de Tinée, Feb 2013, Feb 2014, Feb 2015, Jan 2016

Summer School of Theoretical Mechanics, Instabilities and Bifurcations in Mechanics, Sept 2015 (7h30 lectures)