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@article{MAN_1982__259_163640, author = {Detlev Poguntke}, title = {Operators of {Finite} {Rank} in {Unitary} {Representations} of {Exponential} {Lie} {Groups.}}, journal = {Mathematische Annalen}, pages = {371--384}, publisher = {mathdoc}, volume = {259}, year = {1982}, zbl = {0471.22005}, url = {http://geodesic.mathdoc.fr/item/MAN_1982__259_163640/} }
Detlev Poguntke. Operators of Finite Rank in Unitary Representations of Exponential Lie Groups.. Mathematische Annalen, Tome 259 (1982), pp. 371-384. http://geodesic.mathdoc.fr/item/MAN_1982__259_163640/