L.  Marchiol, Mattiello, A., Po??i?, F., Fellet, G., Zavalloni, C., Carlino, E., and Musetti, R., ?Changes in physiological and agronomical parameters of barley (Hordeum vulgare) exposed to cerium and titanium dioxide nanoparticles?, International Journal of Environmental Research and Public Health, vol. 13, 2016.