@article{10_4153_CMB_1975_070_3,
     author = {Muhly, Paul S.},
     title = {Inner {Functions} and {Isometries}},
     journal = {Canadian mathematical bulletin},
     pages = {383--385},
     year = {1975},
     volume = {18},
     number = {3},
     doi = {10.4153/CMB-1975-070-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-070-3/}
}