@misc{appel_characterization_of_1991, 
author={Appel, F.,Bartsch, M.,Messerschmidt, U.},
title={Characterization of engineering ceramics by electron microscopy},
year={1991},
howpublished = {conference paper,conference lecture: Bombay (IND); November 1990},
note = {Online available at: \url{} (DOI). Appel, F.; Bartsch, M.; Messerschmidt, U.: Characterization of engineering ceramics by electron microscopy. In: Granguly, C.; Roy, S.; Roy, P. (Ed.): Advanced Ceramics: Proceedings of the International Symposium on Advanced Ceramics. Bombay (IND). 1991. 391.}}