@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/