@article{1077469837, author = {Halperin, Israel}, title = {The unitary dilation of a contraction operator}, journal = {Duke Math. J.}, volume = {28}, number = {1}, year = {1961}, pages = { 563-571}, language = {en}, url = {http://dml.mathdoc.fr/item/1077469837} }
Halperin, Israel. The unitary dilation of a contraction operator. Duke Math. J., Tome 28 (1961) no. 1, pp. 563-571. http://gdmltest.u-ga.fr/item/1077469837/