@misc{wilken_organotins_their_1994, 
author={Wilken, R.-D.,Kuballa, J.,Jantzen, E.},
title={Organotins: their analysis and assessment in the Elbe river system},
year={1994},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Wilken, R.; Kuballa, J.; Jantzen, E.: Organotins: their analysis and assessment in the Elbe river system. Fresenius Journal of Analytical Chemistry. 1994. vol. 350, 77-84.}}