F. Zulkipli, Z. Mohd Nopiah, N. Ezlin Ahamad Basri, C. Jack Kie, J. Zulkepli, and K. Irwan Khalid, “Integrated Dynamical Model for Malaysian Solid Waste Management Using System Dynamics”, IJET, vol. 7, no. 3.20, pp. 131–135, Sep. 2018, doi: 10.14419/ijet.v7i3.20.18997.