@misc{schwenke_some_potential_1993, 
author={Schwenke, H.,Bormann, R.,Knoth, J.,Prange, A.},
title={Some potential developments for trace element and surface analysis using a grazing incident X-ray beam},
year={1993},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Schwenke, H.; Bormann, R.; Knoth, J.; Prange, A.: Some potential developments for trace element and surface analysis using a grazing incident X-ray beam. Spectrochimica Acta  B. 1993. vol. 48, no. 2, 293-299.}}