1. Alcaraz, M., Estrada, M., Flos, J., & Fraga, F. (1985). Particulate carbon and nitrogen and plankton biomass in oligotrophic and upwelling systems. In International Symposium on Upwelling off West Africa (Vol. 1, pp. 435–448). Instituto de Investigaciones Pesqueras, Barcelona.
2. Bowen, H. J. M. (1979). Environmental chemistry of the elements (pp. 83–107). London: Academic Press.
3. Cho, N. C., & Azam, F. (1990). Biogeochemical significance of bacterial biomass in the oceans euphotic zone. Marine Ecology Progress Series, 63, 253–259.
4. Eppley, R. W., Harrison, W. G., Chisholm, S. W., & Stewart, E. (1977). Particulate organic matter in surface waters off Southern California and its relationship to phytoplankton. Journal of Marine Research, 35, 671–696.
5. Gordon, D. C., Jr., & Sutcliffe, W. H., Jr. (1974). Filtration of seawater using silver filters for particulate nitrogen and carbon analysis. Limnology and Oceanography, 19, 989–993.