Published European procedures to river quality assessment by Naddeo V., Zarra T. and Belgiorno V. paper_11_NADDEO_383.pdf
Published 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. 42-50_Steinbrecht_354_9-1.pdf