@article{DA_2020_27_2_a5,
     author = {V. M. Fomichev and Ya. E. Avezova},
     title = {Exact formula for exponents of mixing digraphs~for~register~transformations},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {117--135},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2020_27_2_a5/}
}