@misc{petersen_methodology_for_1988, 
author={Petersen, G.,Weber, H.,Grassl, H.},
title={Methodology for model calculations of the atmospheric input of trace metals into the North Sea and the Baltic Sea},
year={1988},
howpublished = {conference lecture: Gdynia (PL); 25.-29.04.1988},
note = {Online available at: \url{} (DOI). Petersen, G.; Weber, H.; Grassl, H.: Methodology for model calculations of the atmospheric input of trace metals into the North Sea and the Baltic Sea. Fifth Meeting of the Group of Experts on Airborne Pollution of the Baltic-Sea Area (EGAP). Gdynia (PL), 1988.}}