Rhizosphere characteristics of the arsenic hyperaccumulator pteris vittata L. and monitoring of phytoremoval efficiency - Fischerova, Zuzana.; Fitz, Walter J.; Kollensperger, Gunda.; Ma, Lena Q.; Nurmi, Johanna.; Schweiger, Peter.; Stingeder, Gerhard.; Stipek, Kamil.; Wenzel, Walter W.; Zhang, Hao.