@misc{schroeder_contribution_of_1991, author={Schroeder, F.,Klages, D.,Knauth, H.-D.}, title={Contribution of sediments to the nitrogen budget of the Elbe estuary}, year={1991}, howpublished = {journal article}, note = {Online available at: \url{} (DOI). Schroeder, F.; Klages, D.; Knauth, H.: Contribution of sediments to the nitrogen budget of the Elbe estuary. Verhandlungen (Internationale Vereinigung fuer theoretische und angewandte Limnologie). 1991. vol. 24, 6318-6322.}}