Rizwan Ahmed Qamar, Asim Mushtaq, Ahmed Ullah, and Zaeem Uddin Ali. 2024. “Designing of Underground Coal Gasification Unit”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 71 (2):103-33. https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/6286.