@misc{schwalbe_the_gkss_1993, 
author={Schwalbe, K.-H.},
title={The GKSS procedure for determining the fracture behaviour of materials},
year={1993},
howpublished = {conference lecture: Dallas, TX (USA);},
note = {Schwalbe, K.: The GKSS procedure for determining the fracture behaviour of materials. ASTM Fall Meeting. Dallas, TX (USA), 1993.}}