Holmes, ME, Lavik, G, Fischer, G, Segl, M, Ruhland, G and Wefer, G (2002) Seasonal variability of d15N in sinking particles in the Benguela upwelling region. Deep Sea Research Part I: Oceanographic Research Papers, 49(2). 377-394. doi:10.1016/S0967-0637(01)00055-3
Holmes, ME, Lavik, G, Fischer, G and Wefer, G (2004) Nitrogen isotopes in sinking particles and surface sediments in the Central and Southern Atlantic. In: Wefer, G, Mulitza, S and Ratmeyer, V (eds.) The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems. Springer, Berlin, Heidelberg, 143-165. doi:10.1007/978-3-642-18917-3_8
Holmes, ME (1996) Reconstruction of surface ocean nitrate utilization in the Southeast Atlantic Ocean based on stable nitrogen isotopes. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 083. Department of Geosciences, Bremen University. urn:nbn:de:gbv:46-ep000102121