Painmanakul, P. , Kongkangwarn, K. , Chawaloesphonsiya, N. (2009). 'Treatment of Oily Wastewater by Fibrous Coalescer Process: Stage Coalescer and Model Prediction'. World Academy of Science, Engineering and Technology, Open Science Index 34, International Journal of Environmental and Ecological Engineering, 3(10), 320 - 325.