Verma, V.; Chaudhary, M.; Srivastava, N. Antioxidative Properties of Isolated Saponins of Verbesina Encelioides (Cav.) Benth. & Hook. Fil Ex Gray and SEM Studies of Synthesized Green Nanoparticles for Acne Management. Plant Sci. Today 2019, 6, 575-582.