Margit Rowell has been a modern and contemporary art museum curator for over 30 years. She has worked for the Solomon R. Guggenheim Museum; the Musée National d'Art Moderne at the Centre Pompidou; the Joan Mirò Foundation, and was head curator for the Department of Drawings at the Museum of Modern Art in New York. She has organized exhibitions and written articles for catalogs on the works of Joan Miró, Julio Gonzalez and Constantin Brancusi, Luciano Fabro and Wolfgang Laib, as well as on the drawings of Antonin Artaud and Sigmar Polke (among others). Jean-Pierre Criqui is an art historian and critic, and is curator at the Department of the contemporary collections of the Musée National d'Art Moderne and Chief Editor of the "Cahiers du Musée National d'Art Moderne" at the Centre Pompidou in Paris. Valérie Da Costa is an art historian and critic, curator, and teaches history of contemporary art at the University of Strasbourg. She has written a large number of books, articles and texts on modern and contemporary sculpture, as well as on artistic multidisciplinary fields. Her writings deal with the history of art from a very open point of view.