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• J.H. Chen, R. L. Edwards, and G.J. Wasserburg: ²³⁸U, ²³⁴U and ²³²Th in seawater; Earth and Planetary Science Letters Vol. 80, pp. 241-251, (1986). download (52 KBytes)
• R. Lawrence Edwards, J.H. Chen and G.J. Wasserburg: ²³⁸U-²³⁴U-²³⁰Th-²³²Th systematics and the precise measurement of time over the past 500,000 years; Earth and Planetary Science Letters Vol. 81, pp. 175-192, (1986/87). download (220 KBytes)
• S.J. Goldstein, M.T. Murrell and D.R. Janecky: Th and U isotopic systematics of basalts from the Juan de Fuca and Gorda Ridges by mass spectrometry; Earth and Planetary Science Letters Vol. 96, pp. 134-146, (1989). download (93 KBytes)
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• M. Reagan, A. M. Volpe, K V. Cashman: ²³⁸U- and ²³²Th-series chronology of phonolite fractionation at Mount Erebus, Antarctica; Geochimica et Cosmochimica Acta Vol. 56, pp. 1401-1407, (1992). download (111 KBytes)

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