@article{MZ_1995__220_1_174821,
     author = {Detlev W. Hoffmann},
     title = {Isotropy of quadratic forms over the function field of a quadric.},
     journal = {Mathematische Zeitschrift},
     pages = {461--476},
     publisher = {mathdoc},
     volume = {220},
     number = {1},
     year = {1995},
     zbl = {0840.11017},
     url = {http://geodesic.mathdoc.fr/item/MZ_1995__220_1_174821/}
}