@misc{petersen_modelling_the_1991, 
author={Petersen, G.},
title={Modelling the long range transport, transformation and deposition of mercury},
year={1991},
howpublished = {conference lecture: Oslo (N);},
note = {Petersen, G.: Modelling the long range transport, transformation and deposition of mercury. EMEP Meteorological Synthesizing Centre West. Oslo (N), 1991.}}