[1]
Nisar Ahmad, Hina Fazal, Bilal Haider Abbasi and Shahid Farooq 2010. Efficient free radical scavenging activity of Ginkgo biloba, Stevia rebaudiana and Parthenium hysterophorous leaves through DPPH (2, 2-diphenyl-1-picrylhydrazyl). International Journal of Phytomedicine. 2, 3 (Sep. 2010), 231–239.