@article{MZ_1992__211_3_174457,
     author = {Piotr Jaworski},
     title = {Witt rings of fields of quotients of two-dimensional regular local rings.},
     journal = {Mathematische Zeitschrift},
     pages = {533--546},
     publisher = {mathdoc},
     volume = {211},
     number = {3},
     year = {1992},
     zbl = {0764.11023},
     url = {http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174457/}
}