@misc{schwalbe_the_ctoaapproach_2004, 
author={Schwalbe, K.-H., Schoedel, M., Heerens, J.},
title={The CTOA-Approach - A Method for Simulation of stable Crack Extension in Thin-Walled Structures under Multiaxial Loading},
year={2004},
howpublished = {conference paper: Berlin (D);},
note = {Schwalbe, K.; Schoedel, M.; Heerens, J.: The CTOA-Approach - A Method for Simulation of stable Crack Extension in Thin-Walled Structures under Multiaxial Loading. In: Proceedings of the 7th International Conference on Biaxial and Multiaxial Fatigue and Fracture. Berlin (D). 2004. 447-451.}}