@misc{dogan_engineering_fracture_1999, 
author={Dogan, B.},
title={Engineering Fracture Mechanics - HT Materials Databank},
year={1999},
howpublished = {lecture: Universitaet Ankara;},
note = {Dogan, B.: Engineering Fracture Mechanics - HT Materials Databank. Universitaet Ankara, 1999.}}