@misc{schroeder_the_effect_1993, 
author={Schroeder, F.,Wiltshire, K. H.,Bloecker, G.,Klages, D.,Mathieu, B.,Knauth, H.-D.},
title={The effect of sediments on the nitrogen budget of the Elbe estuary},
year={1993},
howpublished = {conference lecture: Helsingoer (DK); October 13-16, 1993},
note = {Online available at: \url{} (DOI). Schroeder, F.; Wiltshire, K.; Bloecker, G.; Klages, D.; Mathieu, B.; Knauth, H.: The effect of sediments on the nitrogen budget of the Elbe estuary. International Symposium on Nutrient Dynamics in Coastal and Estuarine Environments. Helsingoer (DK), 1993.}}