Özkan, G., O. Sagdiç, M. Özcan, H. Özçelik, and A. Ünver. “Antioxidant and Antibacterial Activities of Turkish Endemic Sideritis Extracts”. Grasas Y Aceites, vol. 56, no. 1, Mar. 2005, pp. 16-20, doi:10.3989/gya.2005.v56.i1.129.