@misc{appel_mechanical_properties_1999, 
author={Appel, F.,Lorenz, U.,Paul, J.D.H.,Oehring, M.},
title={Mechanical Properties of Niobium Alloyed Gamma Titanium Aluminides},
year={1999},
howpublished = {conference paper: San Diego, CA (USA); 28.02.-04.03.1999},
note = {Online available at: \url{} (DOI). Appel, F.; Lorenz, U.; Paul, J.; Oehring, M.: Mechanical Properties of Niobium Alloyed Gamma Titanium Aluminides. In: Kim, Y.; Dimiduk, D.; Loretto, M. (Ed.): Gamma Titanium Aluminides 1999, International Symposium on Gamma-Titanium Aluminides. San Diego, CA (USA). 1999. 381-388.}}