@misc{petersen_numerical_modelling_1992, 
author={Petersen, G.},
title={Numerical modelling of long-rang transport and chemical transformations of atmospheric mercury},
year={1992},
howpublished = {conference lecture: Ann Arbor, MI (USA);},
note = {Petersen, G.: Numerical modelling of long-rang transport and chemical transformations of atmospheric mercury. Colloquy of the University of Michigan. Ann Arbor, MI (USA), 1992.}}