I am collaborating with several groups worldwide, but mostly in Europe. Major international collaborations are indicated below. I am also collaborating with several French institutes and laboratories, in particular in ANR projects.

• Kay Raum, Berlin-Brandenburg School for Regenerative Therapies, Charité – Universitätsmedizin, Germany
• Alf Gerish, Technische Universität Darmstadt, Germany
• Claus C Gluer and Reihnard Barkmann, Osteoporosediagnostik, University of Kiel, Germany
• William Parnell, homogenization. School of Mathematics, University of Manchester, UK
• Mami Matsukawa, Laboratory of Ultrasonic Electronics, Doshisha University, Japan.
• Guillermo Rus Carlborg, Dpto. Mecánica de Estructuras Politécnico de Fuentenuev, Granada, Spain.