@article{DM_2021_33_2_a2,
     author = {M. Archibald and A. Blecher and A. Knopfmacher},
     title = {Alphabetic points in compositions and words},
     journal = {Diskretnaya Matematika},
     pages = {20--30},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2021_33_2_a2/}
}