@misc{kocak_report_of_1991, 
author={Kocak, M.,Heerens, J.},
title={Report of Round Robin Exercise on Effect of EDM Notching and Fatigue Precracking Methods on CTOD Fracture Toughness Values of Welds},
year={1991},
howpublished = {GKSS report},
note = {Online available at: \url{} (DOI). Kocak, M.; Heerens, J.: Report of Round Robin Exercise on Effect of EDM Notching and Fatigue Precracking Methods on CTOD Fracture Toughness Values of Welds. GKSS 91-E-91. 1991.}}