BIORESOURCE TECHNOLOGY, vol. 101, no. 24, page. 9461 - 9470, 2010-12
WATER RESEARCH, vol. 43, no. 1, page. 157 - 165, 2009-01
JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY, vol. 35, no. 11, page. 1345 - 1352, 2008-11