1. Laboratory of Forest Technology
2. Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, Orestiada, Greece
3. Laboratory of Forest Engineering Sciences and Surveying
4. Department of the Environment, University of the Aegean, Mytilene, Greece
5. Aston Business School, Aston University, Birmingham, UK
6. Department of Forestry & Management of the Environment & Natural Resources, Democritus University of Thrace, N. Orestiada, Greece