@misc{heerens_fracture_of_1988, 
author={Heerens, J., Read, D. T.},
title={Fracture of a pressure vessel steel in the ductile to brittle transition region},
year={1988},
howpublished = {report},
note = {Heerens, J.; Read, D.: Fracture of a pressure vessel steel in the ductile to brittle transition region. 1988.}}