@article{MAN_1986__274_164094,
     author = {R. Sridharan and M.-A. Knus and R. Parimala},
     title = {On {Rank} 4 {Quadratic} {Spaces} with {Given} {Arf} and {Witt} {Invariants.}},
     journal = {Mathematische Annalen},
     pages = {181--198},
     publisher = {mathdoc},
     volume = {274},
     year = {1986},
     zbl = {0612.10014},
     url = {http://geodesic.mathdoc.fr/item/MAN_1986__274_164094/}
}