@misc{vaidya_an_evaluation_1989, 
author={Vaidya, W. V.},
title={An evaluation of crack front effect on threshold and crack propagation},
year={1989},
howpublished = {journal article,GKSS report},
note = {Online available at: \url{} (DOI). Vaidya, W.: An evaluation of crack front effect on threshold and crack propagation. Scripta Metallurgica. 1989. vol. 23, no. 1, 27-32.}}