1. Solid State Group
2. Faculty of Exact and Natural Sciences
3. University of Antioquia – UdeA
4. Medellín
5. Colombia
6. Institute on Sustainable Forest Management
7. Department of Agroforestry Sciences
8. Area of Soil Science and Agricultural Chemistry
9. University of Valladolid
10. Palencia
11. Institut des Molécules et Matériaux du Mans – IMMM UMR CNRS 6283
12. Université du Maine
13. Le Mans, Cedex 9
14. France