Scheiderich, K.; Zerkle, A. L.; Helz, G. R.; Farquhar, J.; Walker, R. J. (2010): Molybdenum isotope, multiple sulfur isotope, and redox-sensitive element behavior in early Pleistocene Mediterranean sapropels. Elsevier, Amsterdam, Netherlands, Chemical Geology, 279 (3-4), 134-144, georefid:2011-017649