1. Aghajani, Z., Pourmeidani, A., & Ekhtiyari, R. (2013). Effect of nano-silver on stages of plant growth and yield and composition of essential of Thymus kotchyanus Boiss. & Hohen. African Journal of Agricultural Research, 8, 707–710.
2. Burits, M., & Bucar, F. (2000). Antioxidant activity of Nigella sativa essential oil. Phytotherapy Research, 14, 323–328.
3. Castiglione, M. R., Giorgetti, L., Geri, C., & Cremonini, R. (2011). The effects of nano-TiO2 on seed germination, development and mitosis of root tip cells of Vicia narbonensis L. and Zea mays L. Journal of Nanoparticle Research, 13, 2443–2449.
4. Cristina, B., & Constantin, D. (2011). The effect of copper sulphat on the production of flavonoids in Digitalis lanata cell cultures. Farmacia, 59, 113–118.
5. Dapkevicius, A., Venskutonis, R., Van-Beek, T. A., & Linssen, P. H. (1998). Antioxidant activity of extracts obtained by different isolation procedures from some aromatic herbs grown in Lithuania. Journal of the Science of Food and Agriculture, 77, 140–146.