TY - JOUR AU - Klapper, A. TI - Selmer group estimates arising from the existence of canonical subgroups JO - Compositio Mathematica PY - 1989 DA - 1989/// SP - 121 EP - 137 VL - 71 IS - 2 PB - Kluwer Academic Publishers UR - http://www.numdam.org/item/CM_1989__71_2_121_0/ UR - https://zbmath.org/?q=an%3A0751.14030 UR - https://www.ams.org/mathscinet-getitem?mr=1012637 LA - en ID - CM_1989__71_2_121_0 ER -