@article{2183,
author = {Erd\"os, P.},
title = {On the coefficients of the cyclotomic polynomial},
journal = {Portugaliae mathematica},
volume = {8},
year = {1949},
pages = {63-71},
zbl = {0038.01004},
mrnumber = {0035787},
language = {en},
url = {http://dml.mathdoc.fr/item/2183}
}
Erdös, P. On the coefficients of the cyclotomic polynomial. Portugaliae mathematica, Tome 8 (1949) pp. 63-71. http://gdmltest.u-ga.fr/item/2183/