@article{VTGU_2015_4_a3,
     author = {T. D. Norbosambuev},
     title = {On sums of diagonal and invertible formal matrices},
     journal = {Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika},
     pages = {34--40},
     publisher = {mathdoc},
     number = {4},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTGU_2015_4_a3/}
}