@misc{siegmund_local_fracture_1998, 
author={Siegmund, T., Brocks, W.},
title={Local Fracture Criteria: Lengthscales and Applications},
year={1998},
howpublished = {journal article},
note = {Siegmund, T.; Brocks, W.: Local Fracture Criteria: Lengthscales and Applications. Journal de Physique 4. 1998. vol. 8, no. 8, 349-356.}}