@article{SEMR_2019_16_a1,
     author = {N. G. Khisamiev and S. D. Tynybekova and A. A. Konyrkhanova},
     title = {A criterion for the universality of a matrix from the group $UT_n(R)$ over a commutative and associative ring $R$ with unity},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {165--174},
     publisher = {mathdoc},
     volume = {16},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2019_16_a1/}
}