@article{DM_2020_32_4_a6,
     author = {A. A. Serov},
     title = {Formulas for the numbers of sequences containing a given pattern given number of times},
     journal = {Diskretnaya Matematika},
     pages = {120--136},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2020_32_4_a6/}
}