WASET
    S. Sukparungsee,  An EWMA p Chart Based On Improved Square Root Transformation.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2014, vol. 91(7). 1045 - 1047
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/9998781.