JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE, vol. 137, no. 8, page. 740 - 745, 2011-08
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, vol. 87, no. 2, page. 765 - 770, 2010-06
BIORESOURCE TECHNOLOGY, vol. 101, page. S13 - S16, 2010-01