%0 Journal Article %A R. Phillips %T On symplectic mappings of contraction operators %J Studia Mathematica %D 1968 %P 15-27 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-31-1-15-27/ %R 10.4064/sm-31-1-15-27 %G en %F 10_4064_sm_31_1_15_27