W.M.F. Wan Ishak and N. A. Rowson, The Effect of Ultrasound Pre-Treatment on Froth Flotation Performance. journal = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology. June 2009, vol. 30(6). 314 - 317 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/5010.