@article{103,
author = "Karl Hans Wedepohl and U. Kramm",
journal = "5th working Meeting 'Isotopes in Nature', Leipzig 1989, Proceedings",
pages = "437-446 (1990)",
title = "{D}rastic change of the {S}r and {S} isotopic composition in seawater at the end of the {P}aleozoic.",
year = "1990",
}