Balasubramanian, V., S. Muthukumaran, K.O. Lilly, I. Rosekumari, and A. Ravi. 2016. “Acoustical Parameters on Certain Benzoyl Cotarnine Derivatives”. Asian Journal of Chemistry 17 (3):2058-60. https://asianpubs.org/index.php/ajchem/article/view/14076.