Mawji, E., R. Schlitzer, E.M. Dodas, C. Abadie, W. Abouchami, R.F. Anderson, O. Baars, and et al. 2014. “The GEOTRACES Intermediate Data Product 2014”. Marine Chemistry 177. Elsevier B.V.: 1-8. doi:10.1016/j.marchem.2015.04.005.

Schlitzer, R., R.F. Anderson, E.M. Dodas, M. Lohan, W. Geibert, A. Tagliabue, A. Bowie, and et al. 2018. “The GEOTRACES Intermediate Data Product 2017”. Chemical Geology 493. Elsevier B.V.: 210-23. doi:10.1016/j.chemgeo.2018.05.040.

Ren, H., A.S. Studer, S. Serno, D.M. Sigman, G. Winckler, R.F. Anderson, S. Oleynik, R. Gersonde, and G.H. Haug. 2015. “Glacial-to-Interglacial Changes in Nitrate Supply and Consumption in the Subarctic North Pacific from Microfossil-Bound N Isotopes at Two Trophic Levels”. Paleoceanography 30. Blackwell Publishing Ltd: 1217-32. doi:10.1002/2014PA002765.

Brunelle, B.G., D.M. Sigman, S.L. Jaccard, L.D. Keigwin, B. Plessen, G. Schettler, M.S. Cook, and G.H. Haug. 2010. “Glacial/Interglacial/Changes/in/Nutrient/Supply/and/Stratification/in/the/Western/Subarctic/North/Pacific/since/the/Penultimate/Glacial/Maximum”. Quaternary Science Reviews 29: 2579-90. doi:10.1016/j.quascirev.2010.03.010.

Jaccard, S.L., G.H. Haug, D.M. Sigman, T.F. Pedersen, H.R. Thierstein, and U. Röhl. 2005. “Glacial/Interglacial/Changes/in/Subarctic/North/Pacific/Stratification”. Science 308: 1003-6. doi:10.1126/science.1108696.

Hastings, M.G., D.M. Sigman, and E.J. Steig. 2005. “Glacial/Interglacial/Changes/in/the/Isotopes/of/Nitrate/from/the/Greenland/Ice/Sheet/Project/2/(GISP2)/Ice/Core”. Global Biogeochemical Cycles 19. doi:10.1029/2005GB002502.

Sigman, D.M., and E.A. Boyle. 2000. “Glacial/Interglacial/Variations/in/Atmospheric/Carbon/Dioxide”. Nature 407: 859-69. doi:10.1038/35038000.

Haug, G.H., T.F. Pedersen, D.M. Sigman, S.E. Calvert, B. Nielsen, and L.C. Peterson. 1998. “Glacial/Interglacial/Variations/in/Production/and/Nitrogen/Fixation/in/the/Cariaco/Basin/During/the/Last/580/Kyr”. Paleoceanography 13. American Geophysical Union: 427-32. doi:10.1029/98PA01976.

Zhang, X., B.B. Ward, and D.M. Sigman. 2020. “Global Nitrogen Cycle: Critical Enzymes, Organisms, and Processes for Nitrogen Budgets and Dynamics”. Chemical Reviews 120. American Chemical Society: 5308-51. doi:10.1021/acs.chemrev.9b00613.

Smart, S.M., H. Ren, S.E. Fawcett, R. Schiebel, M. Conte, P.A. Rafter, K.K. Ellis, et al. 2018. “Ground-Truthing the Planktic Foraminifer-Bound Nitrogen Isotope Paleo-Proxy in the Sargasso Sea”. Geochimica Et Cosmochimica Acta 235. Elsevier Ltd: 463-82. doi:10.1016/j.gca.2018.05.023.

Auderset, A., A. Martínez-García, R. Tiedemann, A.P. Hasenfratz, T.I. Eglinton, R. Schiebel, D.M. Sigman, and G.H. Haug. 2019. “Gulf Stream Intensification After the Early Pliocene Shoaling of the Central American Seaway”. Earth and Planetary Science Letters 520. Elsevier B.V.: 268-78. doi:10.1016/j.epsl.2019.05.022.