S. Ghorbani and  N. I. Polushin,  A Comparison of Single of Decision Tree, Decision Tree Forest and Group Method of Data Handling to Evaluate the Surface Roughness in Machining Process .   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 122(2). 326 - 333
    [viewed 20 November 2019]. Available from: https://publications.waset.org/pdf/10006379.