@misc{markert_oekotoxikologisches_seminar_1991, 
author={Markert, B.},
title={Oekotoxikologisches Seminar},
year={1991},
howpublished = {lecture: Universitaet Osnabrueck; WS 1990-1991},
note = {Online available at: \url{} (DOI). Markert, B.: Oekotoxikologisches Seminar. Universitaet Osnabrueck, 1991.}}