Intan Izafina Idrus and  Mardina Abdullah and  Alina Marie Hasbi and  Asnawi Husin,  Observation of Large-Scale Traveling Ionospheric Disturbance over Peninsular Malaysia Using GPS Receivers.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 84(12). 1681 - 1686
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9996764.