@article{MS2_1971__29_166195,
     author = {Kenneth S. Williams},
     title = {Forms {Representable} by an {Integral} {Positive-Definite} {Binary} {Quadratic} {Form.}},
     journal = {Mathematica Scandinavica},
     pages = {73--86},
     publisher = {mathdoc},
     volume = {29},
     year = {1971},
     zbl = {0227.10016},
     url = {http://geodesic.mathdoc.fr/item/MS2_1971__29_166195/}
}