@article{MAIS_2023_30_3_a1,
     author = {N. S. Lagutina and K. V. Lagutina and A. M. Brederman and N. N. Kasatkina},
     title = {Text classification by {CEFR} levels using machine learning methods and {BERT} language model},
     journal = {Modelirovanie i analiz informacionnyh sistem},
     pages = {202--213},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAIS_2023_30_3_a1/}
}