WASET
    S. F. H. Tasfy and  N. A. M. Zabidi and  M. S. Shaharun,  Hydrogenation of CO2 to Methanol over Copper-Zinc Oxide-Based Catalyst.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2017, vol. 121(1). 108 - 113
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10007696.