APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, vol. 55, no. 6, page. 765 - 770, 2001-06
WATER ENVIRONMENT RESEARCH, vol. 73, no. 3, page. 301 - 306, 2001-05
BIOTECHNOLOGY AND BIOENGINEERING, vol. 73, no. 1, page. 12 - 24, 2001-04-05