@misc{knoth_examination_of_1993, 
author={Knoth, J.,Bormann, R.,Gutschke, R.,Michaelsen, C.,Schwenke, H.},
title={Examination of layered structures by total reflection X-ray fluorescence analysis},
year={1993},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Knoth, J.; Bormann, R.; Gutschke, R.; Michaelsen, C.; Schwenke, H.: Examination of layered structures by total reflection X-ray fluorescence analysis. Spectrochimica Acta  B. 1993. vol. 48, no. 2, 285-292.}}