Supasinee Pipatsantipong and  Pramoch Rangsunvigit and  Santi Kulprathipanja,  Towards CO2 Adsorption Enhancement via Polyethyleneimine Impregnation.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2012, vol. 64(4). 279 - 283
    [viewed 30 March 2020]. Available from: https://publications.waset.org/pdf/929.