@misc{kocak_on_the_1991, 
author={Kocak, M.},
title={On the CTOD toughness testing of the local brittle zones of welds},
year={1991},
howpublished = {conference lecture (invited): Paris (F);},
note = {Kocak, M.: On the CTOD toughness testing of the local brittle zones of welds. International Conference MAT-TEC 91. Paris (F), 1991.}}