@article{He YANG2013, title={Monitoring of ribosomal RNA in the supernatant of activated sludge}, author={He YANG and Wataru SUDA and Kenshiro OSHIMA and Masahira HATTORI and Hiroyasu SATOH and Takashi MINO}, journal={Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)}, volume={69}, number={7}, pages={III_231-III_239}, year={2013}, doi={10.2208/jscejer.69.III_231} }