@article{oai:ynu.repo.nii.ac.jp:00006900,
 author = {Yoshino, Takashi},
 issue = {1},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {},
 note = {application/pdf, In [3], D. Sarason proved the following result : Let q be a non-constant inner function, and let Q be the orthogonal projection from L^{2} onto K=H^{2} ominus T_{q}H^{2} . If A in  mathcal{B}(K) commutes with QL_{z}Q , then there is a function  psi in H^{ infty} such that  Vert psi Vert_{ infty}=  Vert A|| and A=QL_{ psi}Q . The proof is not so easy and simple. And, in this paper, I will give its simple proof by using some properties of Toeplitz and Hankel operators.},
 pages = {21--24},
 title = {A simple proof of Sarason's result for interpolation in H^{infty}},
 volume = {44},
 year = {1997}
}