@article{PDM_2009_10_a28,
     author = {R. S. Struzhkov and T. M. Solov'ev and R. I. Chernyak},
     title = {Digital watermarks resistant to collusion attacks},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {56--59},
     publisher = {mathdoc},
     number = {10},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2009_10_a28/}
}