@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 lecture: Berlin (D); 28.06.-01.07.2004},
note = {Online available at: \url{} (DOI). Schwalbe, K.; Schoedel, M.; Heerens, J.: The CTOA-Approach - A Method for Simulation of stable Crack Extension in Thin-Walled Structures under Multiaxial Loading. 7th International Conference on Biaxial and Multiaxial Fatigue and Fracture. Berlin (D), 2004.}}