Radhakrishnan, V.R. and Ramasamy, M. and Zabiri, H. and Do Thanh, V. and Tahir, N.M. and Mukhtar, H. and Hamdi, M.R. and Ramli, N.  (2007) Heat exchanger fouling model and preventive maintenance scheduling tool.  Fuel, 86 (15).  pp. 2383-2388.  ISSN 00162361