@misc{tschegg_cracks_at_1993, 
author={Tschegg, E., Kirchner, H. O. K., Schwalbe, K.-H.},
title={Cracks at interfaces of different cohesion},
year={1993},
howpublished = {GKSS report},
note = {Tschegg, E.; Kirchner, H.; Schwalbe, K.: Cracks at interfaces of different cohesion. Acta Metallurgica et Materialia. 1993. vol. 41, no. 9, 2783-2790.}}