Divya, R. Kungumapriya, K.Revathi, Senthilkumari.S, R.Ponnulakshmi. Antioxidant Activity in Aqueous and Methanol Extract of Combinations of Psidiumguajava, Foeniculumvulgare and Nigella Sativa. Annals of RSCB 2020, 349-363.