Gomaa, Mohsen Abdel-Motaal, et al. “One-Pot Multi-Component Synthesis of Tetrahydroquinazolinones via Biginelli Condensation Using Molecular Iodine As a Catalyst”. European Journal of Chemistry, vol. 4, no. 4, Dec. 2013, pp. 459-61, doi:10.5155/eurjchem.4.4.459-461.821.