@misc{michaelsen_improved_multilayer_1998, 
author={Michaelsen, C.,Goebel, H.},
title={Improved Multilayer Optics and XRD Applications},
year={1998},
howpublished = {conference lecture (invited): Colorado Springs, CO (USA); 03.-07.08.1998},
note = {Online available at: \url{} (DOI). Michaelsen, C.; Goebel, H.: Improved Multilayer Optics and XRD Applications. 47th Annual Denver X-ray Conference. Colorado Springs, CO (USA), 1998.}}