On the ...-invariant for quadratics forms and the linkage of cyclic algebras. Bill Jacob; P. Mammone; R. Aravire — 1993 Mathematische Zeitschrift
u-invariants of fields of characteristic 2. A.R. Wadsworth; P. Mammone; R. Moresi — 1991 Mathematische Zeitschrift
Fields of characteristic 2 with prescribed u-invariants. P. Mammone; J.-P. Tignol; A. Wadsworth — 1991 Mathematische Annalen