Textile wastewater treatment in a bench-scale anaerobic-biofilm anoxic-aerobic membrane bioreactor combined with nanofiltration, Grilli, Selene, Piscitelli D., Mattioli D., Casu S., and Spagni A. , Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, Volume 46, Number 13, p.1512-1518, (2011)