@misc{wilken_analysis_of_1989, 
author={Wilken, R.-D.,Hintelmann, H.},
title={Analysis of Hg-species in sediments},
year={1989},
howpublished = {conference lecture: Cesme (TR); October 9-20, 1989},
note = {Online available at: \url{} (DOI). Wilken, R.; Hintelmann, H.: Analysis of Hg-species in sediments. NATO-ASI-Tagung: Metal Speciation in the Environment. Cesme (TR), 1989.}}