@misc{weisbrod_total_reflection_1991, 
author={Weisbrod, U.,Gutschke, R.,Knoth, J.,Schwenke, H.},
title={Total reflection X-ray fluorescence spectrometry for quantitative surface and layer analysis},
year={1991},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Weisbrod, U.; Gutschke, R.; Knoth, J.; Schwenke, H.: Total reflection X-ray fluorescence spectrometry for quantitative surface and layer analysis. Applied Physics  A. 1991. vol. 53, 449-456.}}