Aydogan, C., C. Schellekens, T. Moccetti, and A. Busjahn. “EFFECT OF OLIVE LEAF EXTRACT IN ADULT TWINS WITH MILD HYPERTENSION”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 6, May 2009, p. 479, https://journals.athmsi.org/index.php/ajtcam/article/view/932.