Sekhar, T. et al. 2018. One-Pot Synthesis of 3,4-Dihydropyrimidine-2(1H)-thione Derivatives Using DBU as Green and Recyclable Catalyst. Asian Journal of Chemistry. 30, 6 (Apr. 2018), 1243–1246. DOI:https://doi.org/10.14233/ajchem.2018.21181.