@article{1102986036, author = {Russo, Bernard}, title = {Unimodular contractions in Hilbert space.}, journal = {Pacific J. Math.}, volume = {27}, number = {3}, year = {1968}, pages = { 163-169}, language = {en}, url = {http://dml.mathdoc.fr/item/1102986036} }
Russo, Bernard. Unimodular contractions in Hilbert space.. Pacific J. Math., Tome 27 (1968) no. 3, pp. 163-169. http://gdmltest.u-ga.fr/item/1102986036/