1. Laboratory of Wood Anatomy and Technology, Hellenic Agricultural Organisation “Demeter”, Institute of MFE and Forest Products Technology, Athens, Greece
2. Dpto. Productos Forestales, CIFOR-INIA, Madrid, Spain
3. Instituto de Ciencias de la Construcción E. Torroja-Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
4. Research Lab of Wood Science and Technology, Department of Wood & Furniture Design and Technology, Technological and Educational Institution (TEI) of Thessaly, Karditsa, Greece