@misc{hilgert_knowledge_based_2012, 
author={Hilgert, J.},
title={Knowledge Based Process Development of Bobbin Tool Friction Stir Welding (Dissertation)},
year={2012},
howpublished = {doctoral thesis,HZG report},
note = {Online available at: \url{} (DOI). Hilgert, J.: Knowledge Based Process Development of Bobbin Tool Friction Stir Welding (Dissertation). TU Hamburg-Harburg, FB Werkstoffphysik, 2012.}}