@misc{weisbrod_xray_induced_1991, 
author={Weisbrod, U., Gutschke, R., Knoth, J., Schwenke, H.},
title={X-ray induced fluorescence spectrometry at grazing incidence for quantitative surface layer analysis},
year={1991},
howpublished = {GKSS report},
note = {Weisbrod, U.; Gutschke, R.; Knoth, J.; Schwenke, H.: X-ray induced fluorescence spectrometry at grazing incidence for quantitative surface layer analysis. Fresenius Journal of Analytical Chemistry. 1991. vol. 341, no. 12, 83-96.}}