TY - JOUR AU - Qin Yue TI - Class groups under relative quadratic extensions JO - Acta Arithmetica PY - 2011 SP - 399 EP - 414 VL - 150 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa150-4-5/ DO - 10.4064/aa150-4-5 LA - en ID - 10_4064_aa150_4_5 ER -