@misc{roenicke_limnologisches_gutachten_1991, 
author={Roenicke, H., Klapper, H.},
title={Limnologisches Gutachten zur Wasserguetesituation in den Kiesbaggerseen Prettin},
year={1991},
howpublished = {report},
note = {Roenicke, H.; Klapper, H.: Limnologisches Gutachten zur Wasserguetesituation in den Kiesbaggerseen Prettin. 1991.}}