De Lima Perini, J.A., Perez-Moya, M. & Nogueira, R.F.P., 2013. Photo-Fenton degradation kinetics of low ciprofloxacin concentration using different iron sources and pH. Journal of Photochemistry and Photobiology A: Chemistry, 259, pp.53–58. Available at: http://www.sciencedirect.com/science/article/pii/S1010603013000920 [Accessed June 10, 2014].