Widjaja, J., and M.J. Bottema. “DIFFUSIVE LOGISTIC EQUATIONS WITH TIME DELAY AND IMPULSES: EXISTENCE OF SOLUTION AND ATTRACTORS”. Journal of the Indonesian Mathematical Society 13, no. 1 (July 1, 2012): 61–72. Accessed November 23, 2024. https://jims-a.org./index.php/jimsa/article/view/75.