A. Nuchitprasittichai and  N. Lerdritsirikoon and  T. Khamsing,  Improvement of Central Composite Design in Modeling and Optimization of Simulation Experiments.   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2019, vol. 150(6). 333 - 336
    [viewed 12 December 2019]. Available from: https://publications.waset.org/pdf/10010485.