@article{DM_2002_14_1_a1,
     author = {A. A. Grusho and E. L. Shumitskaya},
     title = {A noninterference model and hidden channels},
     journal = {Diskretnaya Matematika},
     pages = {11--16},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2002_14_1_a1/}
}