@article{DM_2007_19_1_a7,
     author = {P. A. Ushakov},
     title = {On a~method to set up a~covert channel and estimation of its tolerance for interference},
     journal = {Diskretnaya Matematika},
     pages = {60--66},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2007_19_1_a7/}
}