Kanimozhi, R., and V. Arjunan. “FT-IR, FT-Raman, NMR Spectroscopic and DFT Quantum Chemical Investigations of 6-Methylcoumarin”. Asian Journal of Chemistry, vol. 33, no. 11, Oct. 2021, pp. 2715-22, doi:10.14233/ajchem.2021.23147.