@conference{West98,
	author = {Westfeld, A., Wolf, G.},
	title = {Steganography in a video conferencing system},
	year = {1998},
	publisher = {In: D. Aucsmith (Ed.): Information Hiding. Second International Workshop, Portland, Oregon, USA, April 1998, LNCS 1525, Springer-Verlag, pp. 32-47}
}