WASET
    S. Aneeka and  S.M. Phyoe and  R. Guo and  Z.W. Zhong,  Imposing Speed Constraints on Arrival Flights: Case Study for Changi Airport  .   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 133(1). 35 - 40
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10008508.