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Journal of analytical atomic spectrometry, 20 (2005) 9, S. 918 - 923
...Becker, J. S....
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Labor-Praxis, 28 (2004) S. 20 - 23
...Becker, J. S....
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International journal of mass spectrometry, 228 (2003)
...Becker, J. S....
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