@misc{petersen_atmospheric_input_1992, 
author={Petersen, G.},
title={Atmospheric input of mercury to the North Sea},
year={1992},
howpublished = {conference lecture: London (GB); November 5-8, 1991},
note = {Online available at: \url{} (DOI). Petersen, G.: Atmospheric input of mercury to the North Sea. Paris Convention for the Prevention of Marine Pollution (Paris Commission): Ninth Meeting of the Working Group on the Atmospheric Input of Pollutants to Convention Waters. London (GB), 1992.}}