%0 Journal Article %A C. Foiaş %A W. Malk %T The extended spectrum of completely non-unitary contractions and the spectral mapping theorem %J Studia Mathematica %D 1965 %P 239-245 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-26-3-239-245/ %R 10.4064/sm-26-3-239-245 %G en %F 10_4064_sm_26_3_239_245