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Rignot, E., Rivera, A., & Casassa, G. (2003). Contribution of the Patagonia Icefields of South America to Sea Level Rise. Science, 302, 434–437. http://doi.org/10.1126/science.1087393 (Original work published October 2003)

Thomas, R., Rignot, E., Casassa, G., Kanagaratnam, P., Acu\~na, C., Akins, T., … Zwally, H. J. (2004). Accelerated Sea-Level Rise from West Antarctica. Science, 306, 255–258. http://doi.org/10.1126/science.1099650 (Original work published October 2004)