Henson, SA.; Sarmiento, J. L.; Dunne, J. P.; Bopp, L.; Lima, I.; Doney, S. C.; John, J.; Beaulieu, C. (2010). “Detection of anthropogenic climate change in satellite records of ocean chlorophyll and productivity”. Biogeosciences. 7(2) (2): 621–640. doi:10.5194/bg-7-621-2010.