Sageman, B., Murphy, A., Werne, J., Ver Straeten, C., Hollander, D., Lyons, T., 2003.
A Tale of Shales: The Relative Roles of Production, Decomposition, and Dilution in the Accumulation of Organic-rich Strata, Middle-Upper Devonian, Appalachian Basin. Chemical Geology 195, 229-273.