@misc{willumeit_analytische_biochemie_2004, 
author={Willumeit, R.},
title={Analytische Biochemie},
year={2004},
howpublished = {lecture: Universitaet Hamburg, FB Chemie; 01.04.-31.07.2004},
note = {Online available at: \url{} (DOI). Willumeit, R.: Analytische Biochemie. Universitaet Hamburg, FB Chemie, 2004.}}