@misc{brocks_the_second_1995, 
author={Brocks, W.,Schmitt, W.},
title={The second parameter in J-R curves: Constraint or triaxiality?},
year={1995},
howpublished = {conference paper,conference lecture: Dallas, TX (USA); November 17-18, 1993},
note = {Online available at: \url{} (DOI). Brocks, W.; Schmitt, W.: The second parameter in J-R curves: Constraint or triaxiality?. In: Kirk, M.; Bakker, A. (Ed.): Constraint Effects in Fracture: Theory and Applications. Dallas, TX (USA). 1995. 209.}}