@misc{willumeit_biochemische_analytik_2006, 
author={Willumeit, R.},
title={Biochemische Analytik},
year={2006},
howpublished = {lecture: Universitaet Hamburg, FB Chemie; 03.04.2006},
note = {Online available at: \url{} (DOI). Willumeit, R.: Biochemische Analytik. Universitaet Hamburg, FB Chemie, 2006.}}