@misc{kosmella_kupferkaschierklebstoff__1989, 
author={Kosmella, H.-J.},
title={Kupferkaschierklebstoff},
year={1989},
howpublished = {report},
note = {Online available at: \url{} (DOI). Kosmella, H.: Kupferkaschierklebstoff. 1989.}}