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@article{MS2_1978__43_166598, author = {R.J. Evans and I.M. Isaacs}, title = {Fields generated by linear combinations of roots of unity, {II.}}, journal = {Mathematica Scandinavica}, pages = {26--34}, publisher = {mathdoc}, volume = {43}, year = {1978}, zbl = {0405.12007}, url = {http://geodesic.mathdoc.fr/item/MS2_1978__43_166598/} }
R.J. Evans; I.M. Isaacs. Fields generated by linear combinations of roots of unity, II.. Mathematica Scandinavica, Tome 43 (1978), pp. 26-34. http://geodesic.mathdoc.fr/item/MS2_1978__43_166598/