A.  Bordoloi, Mathew, N. T., Lefebvre, F., and Halligudi, S. B., ?Inorganic-organic hybrid materials based on functionalized silica and carbon: a comprehensive understanding toward the structural property and catalytic activity difference over mesoporous silica and carbon supports?, Microporous and Mesoporous Materials, vol. 115, no. 3, pp. 345-355, 2008.