S. Bouhouche and  M. Lahreche and  S. Ziani and  J. Bast,  Quality Classification and Monitoring Using Adaptive Metric Distance and Neural Networks: Application in Pickling Process.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2008, vol. 21(9). 210 - 215
    [viewed 03 April 2020]. Available from: https://publications.waset.org/pdf/2191.