Butler, Paul G.; Wanamaker, Alan D.; Scourse, James D.; Richardson, Christopher A.; Reynolds, David J. (2013). “Variability of marine climate on the North Icelandic Shelf in a 1357-year proxy archive based on growth increments in the bivalve Arctica islandica”. Palaeogeography, Palaeoclimatology, Palaeoecology373: 141–151. Bibcode: 2013PPP...373..141B. doi:10.1016/j.palaeo.2012.01.016.
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Butler, Paul G.; Wanamaker, Alan D.; Scourse, James D.; Richardson, Christopher A.; Reynolds, David J. (2013). “Variability of marine climate on the North Icelandic Shelf in a 1357-year proxy archive based on growth increments in the bivalve Arctica islandica”. Palaeogeography, Palaeoclimatology, Palaeoecology373: 141–151. Bibcode: 2013PPP...373..141B. doi:10.1016/j.palaeo.2012.01.016.