About BEGEMANN F
About Max-Planck-Inst. Chemie, Mainz, DEU
About LUDWIG K R
About Berkeley Geochronology Center, CA, USA
About LUGMAIR G W
About Max-Planck-Inst. Chemie, Mainz, DEU
About MIN K
About Univ. California, CA, USA
About NYQUIST L E
About NASA Johnson Space Center, TX, USA
About PATCHETT P J
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About Lockheed-Martin Engineering and Sci. Co., TX, USA
About VILLA I M
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About WALKER R J
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About decay constant
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