var asmd94 = "Atlas of Surface Marine Data, 1994: CD-ROM NODC-56, Ocean Climate Laboratory, NOAA.";
var bates01 = "Bates, N.R., 2001: Interannual variability of oceanic CO<SUB>2</SUB> and biogeochemical properties in the Western North Atlantic subtropical gyre. <I>Deep-Sea Res. II</I>, 48(8–9), 1507–1528.";
var battle_etal00 = "Battle, M., M.L. Bender, P.P. Tans, J.W.C. White, J.T. Ellis, T. Conway and R.J. Francey, 2000: Global carbon sinks and their variability inferred from atmospheric O<SUB>2</SUB> and <IMG SRC=\"/pubs/greek/delta_l.gif\"><SUP>13</SUP>C. <I>Science</I>, 287, 2467–2470.";
var brewer78 = "Brewer, P.G., 1978: Direct observation of oceanic CO<SUB>2</SUB> increase. <I>Geophys. Res. Lett.</I>, 5, 997–1000.";
var chen_millero79 = "Chen, C.T. and F.J. Millero, 1979: Gradual increase of oceanic CO<SUB>2</SUB>. <I>Nature</I>, 277, 205–206.";
var feely_etal99 = "Feely, R.A., R. Wanninkhof, T. Takahashi and P. Tans, 1999: The influence of the equatorial Pacific contribution to atmospheric CO<SUB>2</SUB> accumulation. <I>Nature</I>, 398, 597–601.";
var globalview00 = "GLOBALVIEW-CO<SUB>2</SUB>: Cooperative Atmospheric Data Integration Project - Carbon Dioxide, 2000. CDROM, NOAA CMDL, Boulder, CO. Also available on Internet via anonymous FTP to ftp.cmdl.noaa.gov, Path: ccg/co2/GLOBALVIEW.";
var gruber_etal96 = "Gruber, N., J.L. Sarmiento and T.F. Stocker, 1996: An improved method for detecting anthropogenic CO<SUB>2</SUB> in the oceans. <I>Global Biogeochem. Cycles</I>, 10, 809–837.";
var gruber98 = "Gruber, N., 1998: Anthropogenic CO<SUB>2</SUB> in the Atlantic Ocean. <I>Global Biogeochem. Cycles</I>, 12, 165–191.";
var inoue_etal95 = "Inoue, H.Y., H. Mastueda, M. Ishii, K. Fushimi, M. Hirota, I. Asanuma and Y. Takasugi, 1995: Longterm trend of the partial pressure of carbon dioxide (pCO<SUB>2</SUB>) in surface waters of the western North Pacific 1984–1993. <I>Tellus</I>, 47B, 391–413.";
var keeling_whorf00 = "Keeling, C.D. and T.P. Whorf, 2000: Atmospheric CO<SUB>2</SUB> concentrations—Mauna Loa Observatory, Hawaii, http://cdiac.esd.ornl.gov/npds/npd001.html, Carbon dioxide Information and Analysis Center, Oak Ridge, TN.";
var keeling_etal96 = "Keeling, R., S.C. Piper and M. Heinmann, 1996: Global and hemispheric CO<SUB>2</SUB> sinks deduced from changes in atmospheric O<SUB>2</SUB> concentration. <I>Nature</I>, 381, 218-221.";
var liss_merlivat86 = "Liss, P.S. and L. Merlivat, 1986: Air-sea gas exchange rates: Introduction and synthesis. In: <I>The Role of Air- Sea Exchange in Geochemical Cycling</I>. P. Buat-Menard, ed., Reidel, Boston, 113–129.";
var nightingale_etal00 = "Nightingale, P.D., G. Malin, C.S. Law, A.J. Watson, P.S. Liss, M.I. Liddicoat, J. Boutin and R.C. Upstill-Goddard, 2000: <I>In situ</I> evaluation of air-sea gas exchange parameterizations using novel conservative and volatile tracers. <I>Global Biogeochem. Cycles</I>, 14, 373–387.";
var sabine_feely01 = "Sabine, C.L. and R.A. Feely, 2001: Comparison of recent Indian Ocean anthropogenic CO<SUB>2</SUB> estimates with a historical approach. <I>Global Biogeochem. Cycles</I>, 15(1), 31–42.";
var sarmiento_etal95 = "Sarmiento, J.L., R. Murnane and C. LeQuere, 1995: Airsea CO<SUB>2</SUB> transfer and the carbon budget of the North Atlantic. <I>Philos. Trans. R. Soc. Lond.</I> (B Biol. Sci.), 348, 211–219.";
var siegenthaler_sarmiento93 = "Siegenthaler, U. and J.L. Sarmiento, 1993: Atmospheric carbon dioxide and the ocean. <I>Nature</I>, 365, 119–125.";
var takahashi_etal02 = "Takahashi, T., S.C. Sutherland, C. Sweeney, A. Poisson, N. Metzl, B. Tillbrook, N. Bates, R. Wanninkhof, R.A. Feely, C. Sabine, J. Olafsson and Y. Nojiri, 2002: Global sea-air CO<SUB>2</SUB> flux based on climatological surface ocean <I>p</I>CO<SUB>2</SUB>, and seasonal biological and temperature effects, <I>Deep-Sea Res. II</I>, 49(9–10), 1601–1623.";
var wanninkhof92 = "Wanninkhof, R., 1992: Relationship between gas exchange and wind speed over the ocean. <I>J. Geophys. Res.</I>, 97, 7373–7381.";
var wanninkhof_mcgillis99 = "Wanninkhof, R. and W.M. McGillis, 1999: A cubic relationship between gas transfer and wind speed. <I>Geophys. Res. Lett.</I>, 26, 1889–1893.";
var wanninkhof_etal01 = "Wanninkhof, R., S. Doney, T. Takahashi and W. McGillis, 2001: The Effect of Using Time-Averaged Winds on Regional Air-Sea CO<SUB>2</SUB> Fluxes. In: <I>Gas Transfer at Water Surfaces</I>. M.A. Donelan, W.M. Drennan, E.S. Saltzman and R. Wanninkhof, eds., AGU, Washington, Geophys. Mono. Ser. Vol. 127.";