Reviewed:

• Gruber, N., J.L. Sarmiento and T.F. Stocker, An improved method for detecting anthropogenic CO₂ in the oceans.
  Global Biogeochemical Cycles, 10, 809-837, 1996.
  (PDF-Version of text) (PDF-Version of figures)

Others:

• Gruber, N., T.F. Stocker, C.D. Keeling, J.L. Sarmiento and R.J. Murnane, The distribution of natural and anthropogenic CO₂ and d¹³C in the Atlantic Ocean: Combining Observations and Results from the Princeton 3D OGCM Biogeochemistry Model,
  Caribbean Journal of Science, 32 (3), 287-288, extended abstract, 1996