*Rogers, J.N., Kelley, J.T., Belknap, D.F., *Gontz, A., and *Barnhardt, W.A., 2006, Shallow-water pockmark formation in temperate estuaries: a reconsideration of origins in the western Gulf of Maine. Marine Geology, v. 225, p. 45-62.
*Barnhardt, W.A., Gonzalez, R., Kelley, J.T., Neal, W., Pilkey, O.H., and Dias, J., 2002, Geologic evidence for the incorporation of flood tidal deltas at Tavira Island, southern Portugal. Journal of Coastal Research, Special Issue 36, p.28-36.