WASET
    Fan Li and  Chun-Hsien Chen and  Li Pheng Khoo,  Information Requirements for Vessel Traffic Service Operations.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 113(5). 915 - 919
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10004517.