@article{UZMU_1951_148_148_a16,
     author = {I. M. Gel'fand},
     title = {Remark on the work of {N.} {K.~Bari,} {{\textquotedblleft}Biorthogonal} systems and bases in {Hilbert} space{\textquotedblright}},
     journal = {Uchenye Zapiski Moskovskogo Gosudarstvennogo Universiteta},
     pages = {224--225},
     publisher = {mathdoc},
     volume = {148},
     number = {148},
     year = {1951},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZMU_1951_148_148_a16/}
}