@misc{wilken_comparison_of_1991, 
author={Wilken, R.-D.,Jantzen, E.},
title={Comparison of two sample pretreatment procedures for Sn-organyle analysis},
year={1991},
howpublished = {conference lecture: Burlington (CDN); 15.-18.04.1991},
note = {Online available at: \url{} (DOI). Wilken, R.; Jantzen, E.: Comparison of two sample pretreatment procedures for Sn-organyle analysis. Workshop on Biological Interactions of Metals and Organometals in the Environment. Burlington (CDN), 1991.}}