Ebrahimi, F. ; Jungclas, H. ; Happel, S. ; Ensinger, Wolfgang ; Behe, M. ; Bombard, A. ; Zadmard, R. (2010):
Application of Extraction Chromatography for the Preparation of High Purity 111In for Medical Use.
In: Solvent Extraction and Ion Exchange, 28 (1), pp. 109-123. Taylor & Francis, [Article]

Happel, S. ; Letessier, P. ; Ensinger, W. ; Eikenberg, J. H. ; Thakkar, A. H. ; Horwitz, E. P. (2004):
Gross alpha determination in drinking water using a highly specific resin and LSC.
In: Applied Radiation and Isotopes, 61 (2-3), pp. 339-344. Elsevier, ISSN 09698043,
[Article]

Ensinger, W. ; Vater, P. ; Happel, S. ; Sudowe, R. ; Brandt, R. (2003):
Nuclear track microfilters: gas separation ability and β-radiation stability.
In: Radiation Measurements, 36 (1-6), pp. 707-711. Elsevier, ISSN 13504487,
[Article]

Happel, S. ; Streng, R. ; Vater, P. ; Ensinger, W. (2003):
Sr/Y separation by supported liquid membranes based on nuclear track micro filters.
In: Radiation Measurements, 36 (1-6), pp. 761-766. Elsevier, ISSN 13504487,
[Article]