Mittapelly, Nagaraju, et al. “Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via Three Component Coupling of Alcohol, Azide and Alkynes Using CuO Nanoparticles”. Asian Journal of Chemistry, vol. 25, no. 1, Aug. 2012, pp. 483-6, doi:10.14233/ajchem.2013.13222.