@misc{wilken_the_elbe_1996, 
author={Wilken, R.-D., Wallschlaeger, D.},
title={The Elbe river: a special example for a European river contaminated heavily with mercury},
year={1996},
howpublished = {GKSS report},
note = {Wilken, R.; Wallschlaeger, D.: The Elbe river: a special example for a European river contaminated heavily with mercury. In: Baeyens, W.; Ebinghaus, R.; Vasiliev, O. (Ed.): Global and Regional Mercury Cycles: Sources, Fluxes and Mass Balances - NATO ASI Series. Dordrecht: Kluwer. 1996. 317-328.}}