@article{RM_1972_27_4_a16,
     author = {S. M. Dolganova},
     title = {Semi-Fredholm families of operators in topological vector spaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_4_a16/}
}