@article{MS2_1986__59_166992,
     author = {Rainer Weissauer},
     title = {The {Witt} group of quadratic characters.},
     journal = {Mathematica Scandinavica},
     pages = {71--92},
     publisher = {mathdoc},
     volume = {59},
     year = {1986},
     zbl = {0597.10020},
     url = {http://geodesic.mathdoc.fr/item/MS2_1986__59_166992/}
}