@misc {IOPORT.70028434,
    author       = {Franz, Elke and Pfitzmann, Andreas},
    title        = {Steganography secure against cover-stego-attacks},
    howpublished = {Information Hiding, 29-46 (1999).},
    year         = {1999},
    doi          = {10.1007/10719724_3},
    identifier   = {70028434},
}