@article{VSGU_2011_2_a3,
     author = {M. A. Lihobabenko},
     title = {Block frames in the  $\ell^2$  space},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {38--45},
     publisher = {mathdoc},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2011_2_a3/}
}