@misc{willumeit_biochemisches_kolloquium_2004, 
author={Willumeit, R.},
title={Biochemisches Kolloquium},
year={2004},
howpublished = {lecture: Universitaet Hamburg, FB Chemie;},
note = {Willumeit, R.: Biochemisches Kolloquium. Universitaet Hamburg, FB Chemie, 2004.}}