@misc{zerbst_estimation_of_1991, 
author={Zerbst, U.,Heerens, J.,Petrovski, B.},
title={Estimation of lower bound fracture resistance of a pressure vessel steel based on different proposals},
year={1991},
howpublished = {conference lecture: Geesthacht (D); November 4-6, 1991},
note = {Online available at: \url{} (DOI). Zerbst, U.; Heerens, J.; Petrovski, B.: Estimation of lower bound fracture resistance of a pressure vessel steel based on different proposals. European Structural Integrity Society (ESIS): Technical Committee I; 21st Plenary Meeting. Geesthacht (D), 1991.}}