R. Kongnuy and  P. Pongsumpun,  Dengue Transmission Model between Infantand Pregnant Woman with Antibody.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2008, vol. 20(8). 551 - 557
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/3267.