@article{1077477510, author = {Wermer, John}, title = {The existence of invariant subspaces}, journal = {Duke Math. J.}, volume = {19}, number = {1}, year = {1952}, pages = { 615-622}, language = {en}, url = {http://dml.mathdoc.fr/item/1077477510} }
Wermer, John. The existence of invariant subspaces. Duke Math. J., Tome 19 (1952) no. 1, pp. 615-622. http://gdmltest.u-ga.fr/item/1077477510/