M. Sadeghzadeh and  M. Teshnehlab,  Correlation-based Feature Selection using Ant Colony Optimization.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    April 2010, vol. 40(4). 473 - 478
    [viewed 29 February 2020]. Available from: https://publications.waset.org/pdf/14267.