Chandran Satheesh Kumar, Srinivasagam Raja Sankar, and Kaliyaperumal Prabu, “Efficacy of Hypericum perforatum extract on ultrastructural changes in brain and oxidative damage in Parkinson’s disease”, Int. J. Res. Pharm. Sci., vol. 11, no. (SPL 4), pp. 2793–2798, Dec. 2020.