@misc{tier_a_study_2006, 
author={Tier, M.,Kieckow, F.,Strohaecker, T.,da Silva Rocha, A.,Bell, T.},
title={A Study of Carbon Redistribution During Plasma Nitriding of Steel},
year={2006},
howpublished = {conference lecture: Wien (A); 25.-29.09.2006},
note = {Online available at: \url{} (DOI). Tier, M.; Kieckow, F.; Strohaecker, T.; da Silva Rocha, A.; Bell, T.: A Study of Carbon Redistribution During Plasma Nitriding of Steel. 15th International Federation for Heat Treatment and Surface Engineering. Wien (A), 2006.}}