@article{AM2_1989__38_1_137318,
     author = {Stephen Beale and D.K. Harrison},
     title = {A computation of the {Witt} index for rational quadratic forms.},
     journal = {Aequationes mathematicae},
     pages = {86--98},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1989},
     zbl = {0683.10020},
     url = {http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137318/}
}