@article{10_4153_CMB_1969_072_5,
     author = {Williams, Kenneth S.},
     title = {On {Two} {Conjectures} of {Chowla}},
     journal = {Canadian mathematical bulletin},
     pages = {545--565},
     year = {1969},
     volume = {12},
     number = {5},
     doi = {10.4153/CMB-1969-072-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-072-5/}
}