WASET
    Krasimir Ivanov and  Dimitar Dimitrov and  Boyan Boyanov,  Deactivation of Cu - Cr/γ-alumina Catalysts for Combustion of Exhaust Gases.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2011, vol. 49(1). 39 - 45
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/6456.