@article{1183535829,
author = {Ball, Joseph A.},
title = {Factorization and invariant subspaces for noncontractions},
journal = {Bull. Amer. Math. Soc.},
volume = {80},
number = {4},
year = {1974},
pages = { 896-900},
language = {en},
url = {http://dml.mathdoc.fr/item/1183535829}
}
Ball, Joseph A. Factorization and invariant subspaces for noncontractions. Bull. Amer. Math. Soc., Tome 80 (1974) no. 4, pp. 896-900. http://gdmltest.u-ga.fr/item/1183535829/