%0 Journal Article %A John Conway %A A. Jones %T Trigonometric diophantine equations (On vanishing sums of roots of unity) %J Acta Arithmetica %D 1976 %P 229-240 %V 30 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-30-3-229-240/ %R 10.4064/aa-30-3-229-240 %G en %F 10_4064_aa_30_3_229_240