@article{1183525381,
author = {Sarason, Donald},
title = {Doubly invariant subspaces of annulus operators},
journal = {Bull. Amer. Math. Soc.},
volume = {69},
number = {4},
year = {1963},
pages = { 593-596},
language = {en},
url = {http://dml.mathdoc.fr/item/1183525381}
}
Sarason, Donald. Doubly invariant subspaces of annulus operators. Bull. Amer. Math. Soc., Tome 69 (1963) no. 4, pp. 593-596. http://gdmltest.u-ga.fr/item/1183525381/