@misc{schwenke_how_to_1989, 
author={Schwenke, H., Berneike, W., Knoth, J., Weisbrod, U.},
title={How to use the features of total-reflection of X-rays for energy dispersive XRF},
year={1989},
howpublished = {GKSS report},
note = {Schwenke, H.; Berneike, W.; Knoth, J.; Weisbrod, U.: How to use the features of total-reflection of X-rays for energy dispersive XRF. In: Barrett, C.; Gilfrich, J.; Jenkins, R.; Huang, T.; Predecki, P. (Ed.): Advances in X-Ray Analysis: Proceedings of the Thirty-seventh Annual Conference on Applications of X-Ray Analysis. Steamboat Springs, CO (USA). 1989. 105-114.}}