Matsumoto K., Sarmiento J.L, Key R.M, Aumont O., Bullister J.L, Caldeira K., Campin J.M, Doney S.C, Drange H., Dutay J.C et al..  2004.  Evaluation of ocean carbon cycle models with data-based metrics. Geophysical Research Letters. 31(7)

Gnanadesikan A., Dunne J.P, Key R.M, Matsumoto K., Sarmiento J.L, Slater R.D, Swathi P.S.  2004.  Oceanic ventilation and biogeochemical cycling: Understanding the physical mechanisms that produce realistic distributions of tracers and productivity. Global Biogeochemical Cycles. 18(4)