N. Wadia, Devang, and Pravin M. Patel. “Synthesis and Application of Bifunctional Reactive Dyes Based on 3-(4-Aminophenyl)- 5-Benzylidene-2-Substituted Phenyl-3,5-Dihydro-Imidazol-4-One”. Asian Journal of Chemistry, vol. 21, no. 1, Mar. 2010, pp. 304-12, https://asianpubs.org/index.php/ajchem/article/view/18926.