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@article{PORMA_1982__41_1-4_115497, author = {Beauzamy, B.}, title = {Contractions de classe $C_1$ et sous-\'espaces invariants}, journal = {Portugaliae mathematica}, pages = {247--249}, publisher = {mathdoc}, volume = {41}, number = {1-4}, year = {1982}, mrnumber = {0766853}, zbl = {0573.47003}, language = {fr}, url = {http://geodesic.mathdoc.fr/item/PORMA_1982__41_1-4_115497/} }
Beauzamy, B. Contractions de classe $C_1$ et sous-éspaces invariants. Portugaliae mathematica, Tome 41 (1982) no. 1-4, pp. 247-249. http://geodesic.mathdoc.fr/item/PORMA_1982__41_1-4_115497/