@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 = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). 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.}}