Edlund, M.B., Engstrom, D.R., Triplett, L.D., Lafrancois, B.M. and Leavitt, P.R. (2009) Twentieth century eutrophication of the St. Croix River (Minnesota-Wisconsin, USA) reconstructed from the sediments of its natural impoundment Journal of Paleolimnology 41(4): 641-657.
