@article{NCD_2004_5_a7,
     author = {Vesna Vu\v{c}kovi\'c},
     title = {Digital watermark},
     journal = {Review of the National Center for Digitization},
     pages = {59 },
     publisher = {mathdoc},
     volume = {5},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NCD_2004_5_a7/}
}