A. Ludman, J. T. Hopeck, and H. N. Berry IV, “Provenance and paleogeography of post-Middle Ordovician, pre-Devonian sedimentary basins on the Gander composite terrane, eastern and east-central Maine: implications for Silurian tectonics in the northern Appalachians”, atlgeo, vol. 53, pp. 063–085, Mar. 2017.