@article{DOCMA_2001__S7__a5,
     author = {Fitzgerald, Robert W.},
     title = {Isotropy and factorization in reduced {Witt} rings},
     journal = {Documenta mathematica},
     pages = {141--163},
     publisher = {mathdoc},
     volume = {Proc. Conf. Baton Rouge, March 26-30,2001},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2001__S7__a5/}
}