1. Dipartimento AGROSELVITER, Università di Torino, Via Leonardo da Vicni 44, 10095 Grugliasco (TO), Italy
2. Faculty of Forestry and Environmental Management, University of New Brunswick, 28, Dinneen, Fredericton, NB, Canada, E3B 6C2, Canada
3. ADAI (Associação para o Desenvolvimento da Aerodinâmica Industrial), Apartado 10131, 3031-601 Coimbra, Portugal
4. Biosystems and Agricultural Engineering, Oklahoma State University, 214 Agricultural Hall, Stillwater, Oklahoma, USA 74078, USA
5. Departamento de Geografia, Universidad de Alcalá, Colegios, 2-19005 Alcalá de Henares, Spain