TY - JOUR AU - Franz Halter-Koch AU - Philip Leonard TI - Negatively reduced ideals in orders of real quadratic fields: even discriminants JO - Colloquium Mathematicum PY - 1996 SP - 147 EP - 153 VL - 69 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-69-1-147-153/ DO - 10.4064/cm-69-1-147-153 LA - en ID - 10_4064_cm_69_1_147_153 ER -