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Leu, E.; Søreide, J. E.; Hessen, D. O.. (2011). «Consequences of changing sea-ice cover for primary and secondary producers in the European Arctic shelf seas: Timing, quantity, and quality» Progress of Oceanography 90 (1–4): 18–32. doi:10.1016/j.pocean.2011.02.004. Bibcode: 2011PrOce..90...18L..