@article{Kramm1991253,
author = "U. Kramm and Karl Hans Wedepohl",
doi = "http://dx.doi.org/10.1016/0009-2541(91)90103-X",
issn = "0009-2541",
journal = "Chemical Geology ",
number = "3–4",
pages = "253 - 262",
title = "{T}he isotopic composition of strontium and sulfur in seawater of {L}ate {P}ermian ({Z}echstein) age ",
url = "http://www.sciencedirect.com/science/article/pii/000925419190103X",
volume = "90",
year = "1991",
}