@article{GDZPPN002355094, title = {Fields generated by linear combinations of roots of unity, II.}, journal = {Mathematica Scandinavica}, volume = {43}, year = {1978}, pages = {26-34}, zbl = {0405.12007}, url = {http://dml.mathdoc.fr/item/GDZPPN002355094} }
Evans, R.J.; Isaacs, I.M. Fields generated by linear combinations of roots of unity, II.. Mathematica Scandinavica, Tome 43 (1978) pp. 26-34. http://gdmltest.u-ga.fr/item/GDZPPN002355094/