Saleem, U. et al. 2014. Estimation of Antioxidant Power in Various Extracts of Euphorbia helioscopia L. with Five Different in vitro Antioxidant Models. Asian Journal of Chemistry. 26, 4 (Feb. 2014), 1241–1245. DOI:https://doi.org/10.14233/ajchem.2014.16556.