Hesse, Reinhard, and Hemdat Sawh. “Geology and Sedimentology of the Upper Devonian Escuminac Formation, Québec, and Evaluation of Its Paleoenvironment: Lacustrine Versus Estuarine Turbidite Sequence”. Atlantic Geoscience, vol. 28, no. 3, Nov. 1992, doi:10.4138/1867.