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@article{AM2_1992__44_1_137497, author = {Zbigniew Gajda}, title = {On trigonometric polynomials spanned by characters of unitary representations.}, journal = {Aequationes mathematicae}, pages = {259--277}, publisher = {mathdoc}, volume = {44}, number = {1}, year = {1992}, zbl = {0765.39007}, url = {http://geodesic.mathdoc.fr/item/AM2_1992__44_1_137497/} }
Zbigniew Gajda. On trigonometric polynomials spanned by characters of unitary representations.. Aequationes mathematicae, Tome 44 (1992) no. 1, pp. 259-277. http://geodesic.mathdoc.fr/item/AM2_1992__44_1_137497/