Ashkavand, P., Struve, D., Tabari, M., Tomášková, I., & Zarafshar, M. (2015). Effect of SiO2 nanoparticles on drought resistance in hawthorn seedlings. Leśne Prace Badawcze, 76(4), 350–359. https://doi.org/10.1515-frp-2015-0034