@article{DM_2015_27_3_a3,
     author = {Sergey S. Marchenkov},
     title = {On elementary word functions obtained by bounded prefix concatenation},
     journal = {Diskretnaya Matematika},
     pages = {44--55},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2015_27_3_a3/}
}