TY - JOUR AU - Paweł Gładki AU - Murray Marshall TI - Quotients of index two and general quotients in a space of orderings JO - Fundamenta Mathematicae PY - 2015 SP - 255 EP - 275 VL - 229 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm229-3-3/ DO - 10.4064/fm229-3-3 LA - en ID - 10_4064_fm229_3_3 ER -