@article{JRAM_1988__386_153024,
     author = {Stefan Richter},
     title = {Invariant subspaces of the {Dirichlet} shift.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {205--220},
     publisher = {mathdoc},
     volume = {386},
     year = {1988},
     zbl = {0635.46021},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1988__386_153024/}
}