TY - JOUR AU - Powers, Victoria TI - Higher Level Reduced Witt Rings of Skew Fields. JO - Mathematische Zeitschrift PY - 1988 VL - 198 IS - 4 SP - 545 EP - 554 KW - 2-primary; skew fields; spaces of signatures; preordered skew fields; higher level reduced Witt rings UR - http://eudml.org/doc/173942 ER -