@misc{betzel_seminar_zur_2002, 
author={Betzel, C., Willumeit, R.},
title={Seminar zur strukturellen Biochemie},
year={2002},
howpublished = {lecture: TU Hamburg, FB Chemie;},
note = {Betzel, C.; Willumeit, R.: Seminar zur strukturellen Biochemie. TU Hamburg, FB Chemie, 2002.}}