@misc{krull_the_gkss_1990, 
author={Krull, W.},
title={The GKSS cold neutron source},
year={1990},
howpublished = {conference lecture: Los Alamos, NM (USA); 05.-08.03.1990},
note = {Online available at: \url{} (DOI). Krull, W.: The GKSS cold neutron source. International Workshop on Cold Neutron Sources. Los Alamos, NM (USA), 1990.}}