S. Verdegaal, S.R. Troelstra, C.J. Beets, and H.B. Vonhof. “Stable Isotopic Records in Unionid Shells As a Paleoenvironmental Tool”. Netherlands Journal of Geosciences 84 (December 1, 2005): 403 - 408. Accessed April 6, 2026. https://njgjournal.nl/index.php/njg/article/view/11676.