@article{FPM_2008_14_2_a1,
     author = {E. S. Balmasov and E. I. Bunina},
     title = {Elementary equivalence of unitary linear groups over rings},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {13--27},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2008_14_2_a1/}
}