@misc{kretschmer_recycling_of_1999, 
author={Kretschmer, M., Aust, E.},
title={Recycling of Abrasives and Process Water in the Abrasive Water Jet Technique},
year={1999},
howpublished = {GKSS report},
note = {Kretschmer, M.; Aust, E.: Recycling of Abrasives and Process Water in the Abrasive Water Jet Technique. Chemical Engineering and Technology. 1999. vol. 22, no. 11, 927-930.}}