@article{AA_2011_23_1_a2,
     author = {V. I. Vasyunin and N. K. Nikolskiǐ},
     title = {Invertibility threshold for $H^\infty$ trace algebras, and effective matrix inversions},
     journal = {Algebra i analiz},
     pages = {87--110},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2011_23_1_a2/}
}