@article{RM_1971_26_6_a6,
     author = {J. Eells},
     title = {Fredholm structures},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1971},
     volume = {26},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1971_26_6_a6/}
}