Abdullah, A.Z., et al. “Catalytic Combustion of Voc in Air Stream Over Bimetallic Chromium-Copper Supported On Sicl4-Modified H-Zsm-5 Catalyst”. IIUM Engineering Journal, vol. 7, no. 1, Sept. 2010, pp. 37-45, doi:10.31436/iiumej.v7i1.75.