Wanamaker, A.D., Kreutz, K.J., Schone, B.R., Maasch, K.A., Pershing, A.J., Borns, H.W., Introne, D.S., and Feindel, S., 2008, A late Holocene paleo-productivity record in the western Gulf of Maine, USA, inferred from growth histories of the long-lived ocean quahog (Arctica islandica), International Journal of Earth Sciences, doi 10.1007/s00531-008-0318-z.