Wilde, Pat; Lyons, Timothy W.; Quinby-Hunt, Mary S. (2004): Organic carbon proxies in black shales; molybdenum. Elsevier, Amsterdam, Netherlands, In: Schultz, Richard B. (editor), Rimmer, Susan N. (editor), Geochemistry of organic-rich shales; new perspectives, 206 (3-4), 167-176, georefid:2005-026335