@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/