Sanghani, Y.J. et al. 2019. Synthesis of Substituted 4-(4-((3-Nitro-2-oxo-2H-chromene-4-yl)amino)phenyl)morpholine-3-one Coumarin Derivatives. Asian Journal of Chemistry. 31, 7 (Jun. 2019), 1461–1464. DOI:https://doi.org/10.14233/ajchem.2019.21860.