For citations:

Lavrovskiy V.A., Lagutina N.S., Lavrovskaya O.B. Modern Russian-language texts models comparison for the task of CEFR levels classification. Modeling and Analysis of Information Systems. 2025;32(3):298-310. (In Russ.) https://doi.org/10.18255/1818-1015-2025-3-298-310