@article{10_4064_aa99_1_6,
     author = {Giorgos Siligardos},
     title = {On power residue characters of units
and the representation of numbers by quadratic forms},
     journal = {Acta Arithmetica},
     pages = {67--77},
     publisher = {mathdoc},
     volume = {99},
     number = {1},
     year = {2001},
     doi = {10.4064/aa99-1-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa99-1-6/}
}