WASET
    Songtao Chang and  Yongji Wang and  Lei Liu and  Dangjun Zhao,  Reentry Trajectory Optimization Based on Differential Evolution.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2011, vol. 56(8). 855 - 859
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/3306.