@misc{zerbst_introduction_to_2007, 
author={Zerbst, U.,Lunden, R.,Edel, K.-O.,Smith, R.A.},
title={Introduction to the damage tolerance behaviour of railway rails},
year={2007},
howpublished = {conference lecture: Paris (F); 10.-11.05.2007},
note = {Online available at: \url{} (DOI). Zerbst, U.; Lunden, R.; Edel, K.; Smith, R.: Introduction to the damage tolerance behaviour of railway rails. Fatigue and Damage Tolerance of Railway Rails, ESIS TC 24 Workshop. Paris (F), 2007.}}