Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1975__37_166429, author = {Timo Ojala}, title = {Sums of roots of unity.}, journal = {Mathematica Scandinavica}, pages = {83--101}, publisher = {mathdoc}, volume = {37}, year = {1975}, zbl = {0339.12005}, url = {http://geodesic.mathdoc.fr/item/MS2_1975__37_166429/} }
Timo Ojala. Sums of roots of unity.. Mathematica Scandinavica, Tome 37 (1975), pp. 83-101. http://geodesic.mathdoc.fr/item/MS2_1975__37_166429/