@misc{busch_contrast_enhancement_2015, 
author={Busch, S.},
title={Contrast Enhancement},
year={2015},
howpublished = {conference lecture (invited): Ammersbek (D); 21.-25.09.2015},
note = {Online available at: \url{} (DOI). Busch, S.: Contrast Enhancement. MATRAC 1 - Summer School 2015. Ammersbek (D), 2015.}}