@misc{koenig_moessbauer_studies_1988, 
author={Koenig, I.,Knauth, H.-D.,Koopmann, C.,Wagner, F. E.,Wagner, U.},
title={Moessbauer studies of sediments and suspended matter from the river Elbe},
year={1988},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Koenig, I.; Knauth, H.; Koopmann, C.; Wagner, F.; Wagner, U.: Moessbauer studies of sediments and suspended matter from the river Elbe. Hyperfine Interactions. 1988. vol. 41, 811-814.}}