Meyer GJ, Walte A, Sriyapureddy SR, Grote M, Krull D, Korkmaz Z, Knapp WH. Synthesis and analysis of 2-[211At]-L-phenylalanine and 4-[211At]-L-phenylalanine and their uptake in human glioma cell cultures in-vitro. Appl Radiat Isot. 2010 Jun;68(6):1060–5. doi: 10.1016/j.apradiso.2009.12.043. PMID: 20137958.