George Papaioannou

Assistant Professor, Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace

Spyridon Mamalis

Professor Department of Management Science & Technology, Democritus University of Thrace, Greece

Silvia Kohnova

Head of the Department of Land and Water Resources Management Faculty of Civil Engineering, STUBA Bratislava Prof., Ing., PhD.