@misc{willumeit_experimental_reports_2000, 
author={Willumeit, R., Haramus, V.},
title={Experimental Reports SANS-1 1999},
year={2000},
howpublished = {GKSS report},
note = {Willumeit, R.; Haramus, V.: Experimental Reports SANS-1 1999. GKSS 2000-8. 2000.}}