@misc{lemmen_the_koeuni_2007, 
author={Lemmen, C.},
title={The KOE/Uni Oldenburg Proxy Database},
year={2007},
howpublished = {conference lecture: Geesthacht (D); 10.07.2007},
note = {Online available at: \url{} (DOI). Lemmen, C.: The KOE/Uni Oldenburg Proxy Database. Seminarvortrag. Geesthacht (D), 2007.}}