Wandering subspaces and quasi-wandering subspaces in the Bergman space. Izuchi, Kou Hei — 2011 The New York Journal of Mathematics [electronic only]
Wandering subspaces and the Beurling type theorem. II. Izuchi, Kei Ji; Izuchi, Kou Hei; Izuchi, Yuko — 2010 The New York Journal of Mathematics [electronic only]