@misc{hagner_impacts_of_1999, 
author={Hagner, C.},
title={Impacts of European Lead Regulations},
year={1999},
howpublished = {conference lecture (invited): Schwerin (D); 12.-15.10.1999},
note = {Online available at: \url{} (DOI). Hagner, C.: Impacts of European Lead Regulations. UN / ECE - Workshop on Effects-based Approaches for Heavy Metals. Schwerin (D), 1999.}}