title: Nitrification kinetics of activated sludge-biofilm system: a mathematical model.
authors.affiliation: Department of Civil Engineering, IIT-Roorkee, Roorkee 247 667, India. thallpce@gmail.com
authors.forename: Arun Kumar
authors.initials: AK
authors.lastname: Thalla
authors.forename: Renu
authors.initials: R
authors.lastname: Bhargava
authors.forename: Pramod
authors.initials: P
authors.lastname: Kumar