WASET
     S. Sukparungsee,  Asymmetric Tukey’s Control Chart Robust to Skew and Non-Skew Process Observation.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2013, vol. 80(8). 1275 - 1278
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/16104.