P. D. Quay, Sonnerup, R., Westby, T., Stutsman, J., and McNichol, A. P.,
“Changes in the 13C/12C of dissolved inorganic carbon in the ocean as a tracer of anthropogenic CO2 uptake”,
Global Biogeochemical Cycles, vol. 17, no. 1, pp. 4-1 - 4-20, 2002.
P. D. Quay, Sonnerup, T., Westby, J., Stutsman, J., and McNichol, A. P.,
“Changes of the 13C/12C of dissolved inorganic carbon in the ocean as a tracer of anthropogenic C)2 uptake”,
Global Biogeochemical Cycles, vol. 17, no. 1004, 2003.
]