@misc{hao_the_gursontvergaardneedleman_1997, 
author={Hao, S.,Brocks, W.},
title={The Gurson-Tvergaard-Needleman model for rate and temperature dependent materials with isotropic and kinematic hardening},
year={1997},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Hao, S.; Brocks, W.: The Gurson-Tvergaard-Needleman model for rate and temperature dependent materials with isotropic and kinematic hardening. Computational Mechanics. 1997. vol. 20, 34-40.}}