%0 Journal Article %A Ino, Shoji %T Perturbations of Von Neumann Subalgebras With Finite Index %J Canadian mathematical bulletin %D 2016 %P 320-325 %V 59 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2015-081-8/ %R 10.4153/CMB-2015-081-8 %F 10_4153_CMB_2015_081_8