@article{DM_2005_17_4_a2,
     author = {A. F. Ronzhin},
     title = {Extensions of information protocols based on mappings of finite sets},
     journal = {Diskretnaya Matematika},
     pages = {18--28},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2005_17_4_a2/}
}