Duong Vannak and  Mohd Shahir Liew and  Guo Zheng Yew,  Time Domain and Frequency Domain Analyses of Measured Metocean Data for Malaysian Waters.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2013, vol. 80(8). 549 - 554
    [viewed 16 April 2021]. Available from: https://publications.waset.org/pdf/16180.