@misc{appel_plasticity_and_2002, 
author={Appel, F.},
title={Plasticity and Strength},
year={2002},
howpublished = {lecture: TU Hamburg-Harburg, FB Maschinenbau; WS 2002-2003},
note = {Online available at: \url{} (DOI). Appel, F.: Plasticity and Strength. TU Hamburg-Harburg, FB Maschinenbau, 2002.}}