@article{DAN_1962_145_5_a3,
     author = {I. Ts. Gokhberg},
     title = {Tests for one-sided invertibility of elements in normed rings, and their applications},
     journal = {Doklady Akademii Nauk},
     pages = {971--974},
     publisher = {mathdoc},
     volume = {145},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a3/}
}