B, T., K. J. Naveenkumar, J. G. Bodharthi, and S. R. Shivaprasad. “Antimicrobial Activity of Ethanolic Extract of Usnea Longissima”. Journal of Experimental Sciences, vol. 2, no. 12, Feb. 2012, https://updatepublishing.com/journal/index.php/jes/article/view/1898.