@misc{hao_calculations_of_1992, 
author={Hao, S., Cornec, A., Schwalbe, K.-H.},
title={Calculations of CTOD or J-R curve foe a crack in residual stress zone},
year={1992},
howpublished = {conference lecture: Varna (BG);},
note = {Hao, S.; Cornec, A.; Schwalbe, K.: Calculations of CTOD or J-R curve foe a crack in residual stress zone. In: Sedmak, S.; Sedmak, A.; Ruzic, D. (Ed.): 9th European Conference on Fracture; ECF9. Varna (BG). 1992. 1039-1042.}}