Azah Yusof, Nor, et al. “Preparation and Characterization of Molecular Imprinted Polymer for Melamine Based on Methacrylamide and 9-Vinylcarbazole As Complexing Monomer”. Asian Journal of Chemistry, vol. 26, no. 8, Apr. 2014, pp. 2285-8, doi:10.14233/ajchem.2014.15699.