A time-series phytoremediation experiment with sunflowers (Helianthus annuus) on a former uranium mining siteA. Kötschau, G. Büchel, J. W. Einax, W. von Tümpling and D. MertenE3S Web of Conferences, 1 (2013) 13001DOI: https://doi.org/10.1051/e3sconf/20130113001