Arunkumar, S. et al. 2020. Citrus Extract Modified Graphene Oxide as a Green and Heterogeneous Organocatalyst for the Synthesis of Imidazole Derivatives. Asian Journal of Chemistry. 32, 9 (Aug. 2020), 2375–2380. DOI:https://doi.org/10.14233/ajchem.2020.22578.