@misc{knoth_a_formula_1998, 
author={Knoth, J.,Prange, A.,Reus, U.,Schwenke, H.},
title={A formula for the background in TXRF as a function of the incidence angle and substrate material},
year={1998},
howpublished = {conference lecture (invited): Austin, TX (USA); 27.09.-02.10.1998},
note = {Online available at: \url{} (DOI). Knoth, J.; Prange, A.; Reus, U.; Schwenke, H.: A formula for the background in TXRF as a function of the incidence angle and substrate material. 7th Conference on Total Reflection X-ray floureescence Analysis and Related Methods. Austin, TX (USA), 1998.}}