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APA Citation
Yang, S., Guo, W., Chen, Y., Wu, Q., Luo, H., Peng, S., Zheng, H., Feng, X., Zhou, X., & Ren, N. (2015). economical evaluation of sludge reduction and characterization of effluent organic matter in an alternating aeration activated sludge system combining ozone/ultrasound pretreatment. Bioresource technology, 177, 194–203. http://access.bl.uk/ark:/81055/vdc_100042505266.0x000021