@misc{schwenke_trace_and_1988, 
author={Schwenke, H.,Knoth, J.},
title={Trace and surface analysis by total reflection XRF},
year={1988},
howpublished = {conference lecture: Boston, MA (USA); November 1-4, 1988},
note = {Online available at: \url{} (DOI). Schwenke, H.; Knoth, J.: Trace and surface analysis by total reflection XRF. The Federation of Analytical Chemistry: FACSS XV.. Boston, MA (USA), 1988.}}