@article{10_4153_CJM_1978_101_8,
     author = {Fialkow, Lawrence A.},
     title = {A {Note} on {Unitary} {Cross} {Sections} for {Operators}},
     journal = {Canadian journal of mathematics},
     pages = {1215--1227},
     year = {1978},
     volume = {30},
     number = {6},
     doi = {10.4153/CJM-1978-101-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-101-8/}
}