%0 Journal Article %A B. S. Mityagin %T The homotopy structure of the linear group of a~Banach space %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1970 %P 59-103 %V 25 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1970_25_5_a1/ %G en %F RM_1970_25_5_a1