Önal, Zülbiye. “Synthesis and Spectral Studies of Some 2-Oxopyrimidine-1(2H)-Yl]-Pyrrolidine-2,5-Dione Derivatives”. Asian Journal of Chemistry, vol. 25, no. 5, Dec. 2012, pp. 2716-8, doi:10.14233/ajchem.2013.13726.