ILANGO, G., M. ARIVAZHAGAN, V. BALACHANDRAN, and R. JOHN XAVIER. 2010. “Vibrational Assignments and Normal Coordinate Analysis of 2-Fluorenyl Methyl Ketone”. Asian Journal of Chemistry 21 (2):1419-24. https://asianpubs.org/index.php/ajchem/article/view/18842.