Published Economic Evaluation of Small Capacity Sewage Processing Units by Gratziou M.K., Tsalkatidou M., Kotsovinos N.E. paper_9_GRATZIOU_387.pdf
Published Estimation of future methane production from Hellenic landfills by Tsatsarelis T., Karagiannidis A. 162-171_11-2_591_Tsatsarelis.pdf