Kintzios, S. Adamopoulou, M. Pistola, E. Delki, K. Drossopoulos, J., Studies on the physiological function of in vitro produced antioxidants from sage (Salvia officinalis L.): Effects on cell growth and metabolism, Journal of Herbs, Spices and Medicinal Plants, (9), 229-233, 2002, Taylor and Francis Inc.,