1. Graduate Studies in Mathematics;J. Agler,2002
2. Ahern, P.R., Clark, D.N.: On functions orthogonal to invariant subspaces. Acta Math. 124, 191–204 (1970)
3. Ahern, P.R., Clark, D.N.: Radial limits and invariant subspaces. Amer. J. Math. 92, 332–342 (1970)
4. Aleksandrov, A.B.: Invariant subspaces of the backward shift operator in the space H p (p∈(0, 1)). Zap. Nauchn. Sem. Leningr. Otdel. Mat. Inst. Steklov. (LOMI) 92, 7–29 (1979), also see p. 318. Investigations on linear operators and the theory of functions, IX
5. Aleksandrov, A.B.: Invariant subspaces of shift operators. An axiomatic approach. Zap. Nauchn. Sem. Leningr. Otdel. Mat. Inst. Steklov. (LOMI), 113, 7–26 (1981), also see p. 264. Investigations on linear operators and the theory of functions, XI