%0 journal article %@ 0090-3973 %A Nikishkov, G., Heerens, J., Hellmann, D. %D 1999 %J Journal of Testing and Evaluation %N 5 %P 312-319 %T Effect on Crack Front Curvature and Side Grooving on CTOD Delta5 and J-integral in CT and 3PB-Specimens %U 5 %X