@article{GDZPPN002039753,
title = {On trigonometric polynomials spanned by characters of unitary representations.},
journal = {Aequationes mathematicae},
volume = {44},
year = {1992},
pages = {259-277},
zbl = {0765.39007},
url = {http://dml.mathdoc.fr/item/GDZPPN002039753}
}
Gajda, Zbigniew. On trigonometric polynomials spanned by characters of unitary representations.. Aequationes mathematicae, Tome 44 (1992) pp. 259-277. http://gdmltest.u-ga.fr/item/GDZPPN002039753/