@misc{heerens_fracture_toughness_2001, 
author={Heerens, J., Hellmann, D., Ainsworth, R.A.},
title={Fracture toughness determination in the ductile to brittle transition regime - pre-cracked Charpy specimens compared with standardard compact specimens},
year={2001},
howpublished = {conference lecture: Poitiers (F);},
note = {Heerens, J.; Hellmann, D.; Ainsworth, R.: Fracture toughness determination in the ductile to brittle transition regime - pre-cracked Charpy specimens compared with standardard compact specimens. From Charpy to Present Impact Testing, Charpy Centenary Conference - CCC 2001. Poitiers (F), 2001.}}