Thilakam, R., V. Jayamani, R. Kalpana, and A.K. Gayathiri. 2010. “Synthesis, Physico-Chemical and Antimicrobial Studies of Diketones, Disemicarbazones and Pentaaza Dispiro Tetradecaenes”. Asian Journal of Chemistry 23 (1):366-68. https://asianpubs.org/index.php/ajchem/article/view/10139.