Sajad Yousuf, Bachheti R.K, Archana Joshi, and Mehraj-ud-din Bhat. “Comparative Analysis of in Vitro Antibacterial Activity of Extracts of Viola Patrinii on Pathogenic Microorganisms”. International Journal of Research in Pharmaceutical Sciences, Vol. 3, no. 3, July 2012, pp. 432-5, https://pharmascope.org/ijrps/article/view/1059.