W. Y. Wan Fairos and  W. H. Wan Azaki and  L. Mohamad Alias and  Y. Bee Wah,  Modelling Dengue Fever (DF) and Dengue Haemorrhagic Fever (DHF) Outbreak Using Poisson and Negative Binomial Model.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2010, vol. 38(2). 56 - 61
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/6765.