@article{JRAM_1993__443_153558,
     author = {Per Jan Hakan Hedenmalm},
     title = {An invariant subspace of the {Bergman} space having the codimension two property.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {443},
     year = {1993},
     zbl = {0783.30040},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1993__443_153558/}
}