Centre National de la Recherche Scientifique (CNRS) Laboratoire Ecologie Fonctionnelle et Environnement. Toulouse (Francia). Date: 22/05/2023-5/09/2023+15/01/2024-15/03/2024.  6 months. Ecosystem services and economic indicators in water management. Postdoctoral stay- Invited

Universidad del País Vasco – Facultad de Ciencias Sociales y de la Comunicación. Departamento de Ciencia Política y de la Administración. Bilbao (Spain). 15/9/2014-12/12/2014: 4 months. Gender indicators and the pay gap. Postdoctoral stay – Invited

University of Florence – Dipartimento di Statistica “G.Parenti”. Florence (Italy). 26/5/2010-28/1/2011: 8 months. Elaboration of Spatial Index Numbers (Case of the Consumer Price Index-CPI). Postdoctoral stay – Invited.

Universidad de Valencia – Facultad de Economía. Valencia (Spain). 1/1/2006-31/3/2006: 3 months. Spatial estimation and its application to the field of electoral processes. Postdoctoral stay – Invited.