1. A simple and accurate mathematical methods for calculation of the EC50;Alexander;Journal of Pharmacology and Toxicology,1999
2. Peroxidase like activity of;Anesini;Ilex Paraguarienses. Food Chemistry,2006
3. Antioxidant and prooxidant properties of caffeine, theobromine and xanthine;Azam;Medical Science Monitor,2003
4. Antioxidant determinations by the use of a stable free radical;Blois;Nature,1958
5. Farmacopea Nacional Argentina,1978