W. M. A. W. . Ahmad, W. M. N. . Wan Zainon, M. A. . Awang Nawi, and F. M. . Mohamad Ghazali, “Malaysia’s Efficiency in Dealing with COVID-19 Outbreaks Compared to Other Asian Countries by Using Stochastic Frontier Analysis (SFA)”, Annals KEMU, vol. 26, no. 2, pp. 324–329, Sep. 2020.