@article{DAN_1970_193_5_a2,
     author = {N. I. Gurarii},
     title = {Some basis theorems in {Hilbert} space and {Banach} spaces},
     journal = {Doklady Akademii Nauk},
     pages = {974--977},
     publisher = {mathdoc},
     volume = {193},
     number = {5},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a2/}
}