@article{MS2_1992__71_1_167212,
     author = {Genkai Zhang},
     title = {Ha-Plitz {Operators} between {Moebius} {Invariant} {Subspaces.}},
     journal = {Mathematica Scandinavica},
     pages = {69--84},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {1992},
     zbl = {0793.47028},
     url = {http://geodesic.mathdoc.fr/item/MS2_1992__71_1_167212/}
}