@article{10_4064_sm196_2_3,
     author = {Kunyu Guo and Liankuo Zhao},
     title = {On unitary  equivalence  of invariant subspaces of the {Dirichlet} space},
     journal = {Studia Mathematica},
     pages = {143--150},
     year = {2010},
     volume = {196},
     number = {2},
     doi = {10.4064/sm196-2-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm196-2-3/}
}