@article{TDM_2007_10_a7,
     author = {V. L. Kurakin},
     title = {Free shift {registers.~II}},
     journal = {Trudy po diskretnoj matematike},
     pages = {123--174},
     publisher = {mathdoc},
     volume = {10},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TDM_2007_10_a7/}
}