@article{AL_2021_60_2_a6,
     author = {A. N. Khisamiev},
     title = {Universal functions and $\Sigma_{\omega}$-bounded structures},
     journal = {Algebra i logika},
     pages = {210--230},
     year = {2021},
     volume = {60},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2021_60_2_a6/}
}