@misc{clemens_structural_materials_2001, 
author={Clemens, H.},
title={Structural Materials I},
year={2001},
howpublished = {lecture: Technische Fakultaet, CAU-Kiel; WS 2001-2002},
note = {Online available at: \url{} (DOI). Clemens, H.: Structural Materials I. Technische Fakultaet, CAU-Kiel, 2001.}}