Saleem Nawaz Khan, Sintayehu Mekuria Hailegiorgis, Zakaria Man, and Azmi Mohd Shariff. “Solubility of CO2 in Piperazine (PZ) Activated Aqueous N-Methyldiethanolamine (MDEA) Solvent under High Pressure”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 42, no. 1, Feb. 2018, pp. 96-102, https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/2658.