@article{AL_2020_59_6_a3,
     author = {A. N. Shevlyakov},
     title = {Finite submonoids of free left regular bands with unit},
     journal = {Algebra i logika},
     pages = {680--701},
     year = {2020},
     volume = {59},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2020_59_6_a3/}
}