@article{PDM_2016_1_a5,
     author = {G. P. Agibalov},
     title = {Watermarking ciphers},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {62--66},
     publisher = {mathdoc},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PDM_2016_1_a5/}
}