1. Arason, J.K.: Cohomologische Invarianten quadratischer Formen. J. Algebra36, 448?491 (1975)
2. Arason, J.K., Elman, R., Jacob, B.: The graded Wittring and Galois cohomology. I. Canadian Mathematical Society Conference Proceedings, Vol. 4 (1984)
3. Arason, J.K., Elman, R., Jacob, B.: In preparation
4. Arason, J.K., Elman, R., Jacob, B.: The graded Witt ring and Galois cohomology. II (in preparation)
5. Berman, L., Cordes, C., Ware, R.: Quadratic forms, rigid elements, and formal power series fields. J. Algebra66, 123?133 (1980)