@misc{kupka_fracture_experiments_2013, 
author={Kupka, D.},
title={Fracture Experiments of Single Grain Boundaries in Ductile Metals (Dissertation)},
year={2013},
howpublished = {doctoral thesis,HZG report},
note = {Online available at: \url{} (DOI). Kupka, D.: Fracture Experiments of Single Grain Boundaries in Ductile Metals (Dissertation). Technische Universitaet Hamburg-Harburg, FB Maschinenbau, 2013.}}