@misc{schwalbe_fracture_mechanics_1993, 
author={Schwalbe, K.-H.},
title={Fracture mechanics in practical use},
year={1993},
howpublished = {conference lecture (invited): Kiew (UA); June 1-6, 1993},
note = {Online available at: \url{} (DOI). Schwalbe, K.: Fracture mechanics in practical use. 9th International Conference on Fracture. Kiew (UA), 1993.}}