%0 Journal Article %T Method of paired comparisons as contributing to solving ecological problems of wastewater sludge processing %A Subbotin, K.. %A Panova, M.. %A Tyger, L.. %K waste processing technology. Method of paired comparisons, group of experts, Microsoft Excel %J Services in Russia and abroad %D 2014 %N 8 %P 11 %I Russian State University of Tourism and Service