@article{DAN_1958_122_1_a4,
     author = {K. M. Fishman},
     title = {On the relationship between the method of close systems in special linear topological spaces and certain problems of the theory of perturbation of linear operators in {Banach} spaces},
     journal = {Doklady Akademii Nauk},
     pages = {22--25},
     publisher = {mathdoc},
     volume = {122},
     number = {1},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_122_1_a4/}
}