@misc{tier_evaluation_of_2007, 
author={Tier, M.,Kieckow, F.,dos Santos, J.,Strohaecker, T.,Bell, T.},
title={Evaluation of Toughness in Nitrided Layers by Indentation Method},
year={2007},
howpublished = {conference lecture: Paris (F); 24.-26.09.2007},
note = {Online available at: \url{} (DOI). Tier, M.; Kieckow, F.; dos Santos, J.; Strohaecker, T.; Bell, T.: Evaluation of Toughness in Nitrided Layers by Indentation Method. 21st International Conference on Surface Modification Technologies, SMT 21. Paris (F), 2007.}}