@article{10_4153_CMB_1985_052_x,
     author = {Chalk, J. H. H.},
     title = {On a {Congruence} {Related} to {Character} {Sums}},
     journal = {Canadian mathematical bulletin},
     pages = {431--439},
     year = {1985},
     volume = {28},
     number = {4},
     doi = {10.4153/CMB-1985-052-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-052-x/}
}