Özkan, G., Sagdiç, O., Özcan, M., Özçelik, H. and Ünver, A. (2005) “Antioxidant and antibacterial activities of turkish endemic Sideritis extracts”, Grasas y Aceites, 56(1), pp. 16–20. doi: 10.3989/gya.2005.v56.i1.129.