@conference{Zöl98,
	author = {Zöllner, J., Federrath, H., Klimant, H., Pfitzmann, A., Piotraschke, R., Westfeld, A., Wicke, G., Wolf, G.},
	title = {Modeling the security of steganographic systems},
	year = {1998},
	publisher = {In: D. Aucsmith (Ed.): Information Hiding. Second International Workshop, Portland, Oregon, USA, April 1998, LNCS 1525, Springer-Verlag, pp. 344-354}
}