@misc{nikishkov_comparison_of_1999, 
author={Nikishkov, G.,Heerens, J.,Hellmann, D.},
title={Comparison of finite element results and experimental measurements of CTOD  Delta5 in CT-specimens},
year={1999},
howpublished = {journal article},
note = {Online available at: \url{} (DOI). Nikishkov, G.; Heerens, J.; Hellmann, D.: Comparison of finite element results and experimental measurements of CTOD  Delta5 in CT-specimens. Journal of Testing and Evaluation. 1999. vol. 27, no. 5, 307-311.}}