- 1- Tastes and distinction in the demand for cultural property, in collaboration with R. Teboul, in Economy and culture. The tools of the economist to the test, Xavier Dupuis and François Rouet ed., La Documentation Française, Paris, volume 1, 1987.
-2- Chronology, ceramics and statistics, in collaboration with S. Dabo, X. Deru, G. Florent, SFECAG, French Society for the Study of Antique Ceramics in Gaul, Proceedings of the Langres Congress, 2007, p. 49-60.
-3- Value of the acquisitions of Belgian artists by the French State, 1890-1940, in collaboration with Céline de Potter, in Béatrice Joyeux-Prunel (s.d.), Art and Measurement: history of art and quantitative methods, proceedings of the international symposium organized the Ecole Normale Supérieure of the rue d'Ulm in Paris on 3, 4 and 5 December 2008 Paris, Editions Rue d'Ulm, 2010, p. 193-230. Conference available to listen on the site of the ENS: http://www.diffusion.ens.fr/index.php? res = conf = 2289 & idconf
-4- Demonstration of a ceramic facies in the north-west of Roman Belgium [6], in collaboration with Xavier Deru and Moez Kilani, SFECAG, French Society for the Study of Antique Ceramic in Gaul, Proceedings of the congress of Chelles, 2010, p. 207-224.