[1] M. Ciemała K. Szymiczek: 
Witt equivaience of globai function fields. Tatra Mount. Math. Publ. (to appear). 
MR 1845441[3] T. Y. Lam: 
The aigebraic theory of quadratic forms. W. A. Benjamin, Reading, Mass. 1973. 
MR 0396410[4] J. Milnor D. Husemoller: 
Symmetric bilinear forms. Springer, Berlin 1973. 
MR 0506372[5] K. Szymiczek: 
On the Milnor exact sequence for rational quadratic forms. In: Number Theory in Progress. Editors K. Győry et al., Proc. Int.  Conf. Number Theory, pp. 531-537. Walter de Gruyter, Berlin-New York 1999. 
MR 1689528 | 
Zbl 0933.11022