Talks given in conferences
Conference « International Conference on Spherical Varieties » in Sanya in China (from the 7th to the 11th november 2016)

-Colloquium « Théorie de Lie algébrique et géométrie » in Montpellier (the 14th and 15th january 2016)

-Workshop « Aspects géométriques des groupes algébriques » in Nancy (the 4th and 5th june 2013)

-Conference « Géométrie Algébrique et Géométrie Complexe » in Luminy (from the 9th january to the 2nd february 2013)

-Conference « Géométrie Algébrique et Géométrie Complexe » in Luminy (from the 12th to the 16th january 2009)

-Colloquium « Groupes, géométrie et théorie de représentations » in Amiens in France (from the 18th to 20th january 2007).

-Conference « Géométrie Algébrique en Liberté (GAEL) » in Beldewo in Poland (from the 6th to the 10th march 2006).

-Workshop « Convex and Algebraic Geometry » in Oberwolfach in Germany (from the 29th january to the 4th february 2006)

Talks given in seminars in
Nice, Rennes, Poitiers, Angers, Nancy, Marseille, Bordeaux, Lille, Lyon, Grenoble, Dijon, Montpellier, Bâle, Cologne, Pau, Nantes, Bochum, Rennes, Berlin.

Lectures series
-4 hours in the summer school «Current Topics in the Theory of Algebraic Groups » in Dijon, from the 3rd to the 7th july 2017: lectures notes.
-4 hours in the conference « Extremal Kähler metrics, reductive groups compactifications and stationnary Lagrangians » in Anogia (Crete), from the 27th june to 1st july 2016.
-8 hours in KIAS in Seoul (in 2009): lectures notes.