@misc{kocak_fracture_toughness_1991, 
author={Kocak, M.},
title={Fracture toughness testing of local brittle zones of welds},
year={1991},
howpublished = {conference lecture: Paris (F);},
note = {Kocak, M.: Fracture toughness testing of local brittle zones of welds. International Conferences MAT-TEC '91. Paris (F), 1991.}}