@misc{schwalbe_the_gkss_1994, 
author={Schwalbe, K.-H., Neale, B. K., Heerens, J.},
title={The GKSS test procedure for determining the fracture behaviour of materials: EFAM GTP 94},
year={1994},
howpublished = {GKSS report},
note = {Schwalbe, K.; Neale, B.; Heerens, J.: The GKSS test procedure for determining the fracture behaviour of materials: EFAM GTP 94. GKSS 94-E-60. 1994.}}