?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=MVH&rft.au=Wolthers%2C+MVH&rft.aulast=Wolthers&rft.date=2007&rft.atitle=Copper+incorporation+in+foraminiferal+calcite%3A+results+from+culturing+experiments&rft.volume=4&rft.issn=1726-4170&rft.pages=493+-+504&rft.title=Biogeosciences&rft.genre=article