@article{IM_1973__20_142200,
     author = {L. Auslander and J. Brezin},
     title = {Translation-Invariant {Subspaces} in {L2} of a {Compact} {Nilmanifold.} {I.}},
     journal = {Inventiones mathematicae},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {20},
     year = {1973},
     zbl = {0259.22016},
     url = {http://geodesic.mathdoc.fr/item/IM_1973__20_142200/}
}