@misc{stuhrmann_new_contrast_2001, 
author={Stuhrmann, H.B.},
title={New Contrast Variation Techniques in Small-Angle Scattering},
year={2001},
howpublished = {conference lecture (invited): Krakau (PL); 26.-31.08.2001},
note = {Online available at: \url{} (DOI). Stuhrmann, H.: New Contrast Variation Techniques in Small-Angle Scattering. 20th European Crystallographic Meeting, ECM 20. Krakau (PL), 2001.}}