Gray, Stephen R, Ritchie, C. B, Bolto, Brian, Greenwood, P, Busetti, F and Allpike, B (2008) Effect of membrane character and solution chemistry on microfiltration performance. Water Research : a Journal of the International Water Association (IWA), 42 (3). pp. 743-753. ISSN 0043-1354

Gray, Stephen R, Ritchie, C. B, Tran, Thuy and Bolto, Brian (2007) The effect of NOM characteristics and membrane type on microfiltration performance. Water Research : a Journal of the International Water Association (IWA), 41 (17). 3833 -3841. ISSN 0043-1354

Gray, Stephen R and Ritchie, C. B (2006) Effect of organic polyelectrolyte characteristics on floc strength. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 273 (1-3). pp. 184-188. ISSN 0927-7757

Gray, Stephen R, Tran, Thuy, Bolto, Brian and Ritchie , C. B (2005) NOM composition - effect on microfiltration fouling. In: Proceedings of AWWA Membrane Technology Conference & Exposition, 6-9 March 2005, Phoenix, Arizona.