To see the profile of my Ph.D. supervisor - Late - Prof. Dr. Li Quan Lin, one may refer to his work
Akbar, U., & Dwyer, R. J. (2022, June). Study of Eco-Efficiency Based On Quantitative Ecological Trade-Offs. DOI: 10.11159/ehst22.135
Akbar, U., Fan, R. N., & Li, Q. L. (2019, October). A route option for different commodity groups in international trade: China Pakistan economic corridor. In International Conference of Celebrating Professor Jinhua Cao's 80th Birthday (pp. 446-464). Singapore: Springer Singapore.