TY - JOUR AU - Piotr Mankiewicz AU - Stanisław J. Szarek TI - On the geometry of proportional quotients of ${l^m_1}$ JO - Studia Mathematica PY - 2003 SP - 51 EP - 66 VL - 155 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm155-1-4/ DO - 10.4064/sm155-1-4 LA - en ID - 10_4064_sm155_1_4 ER -