Professor Javier Reyes from The University of Campeche spent one month at CY Cergy Paris Université.

He taught a cour about the use of non destructive technique in the study of built cultural heritage to students of professional bachelor "Preservation et Mise en Valeur du Patrimoine Bâti"

He collaborate with Jose Diaz Basteris in the development of a methodology to chose the most convenient restoration mortar based on compatibility, sustainability and economic criteria.