@misc{zerbst_basic_principles_2000, 
author={Zerbst, U., Ainsworth, R.A., Schwalbe, K.-H.},
title={Basic principles of analytical flaw assessment methods},
year={2000},
howpublished = {GKSS report},
note = {Zerbst, U.; Ainsworth, R.; Schwalbe, K.: Basic principles of analytical flaw assessment methods. International Journal of Pressure Vessels and Piping. 2000. vol. 77, 855-867.}}