Hydrochemical characteristics of the Gallikos River water, Prefecture of Kilkis, Greece by Mattas C., Soulios G., Panagopoulos A., Voudouris K. and Panoras A.
Investigations on disposal of low-calorific landfill gases by a small scale fluidised bubbling bed combustion plant by Steinbrecht D., Wolff H.-J., Matzmohr R., Nassour A. and Didik H.