TY - JOUR AU - A. Iwan AU - C. Wowk TI - Basic part of Witt rings of elementary type JO - Commentationes Mathematicae PY - 1988 SP - 257 EP - 263 VL - 27 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v27i2.6206/ DO - 10.14708/cm.v27i2.6206 LA - pl ID - 10_14708_cm_v27i2_6206 ER -