TY - JOUR AU - Baur, Walter TI - Decidability and undecidability of theories of abelian groups with predicates for subgroups JO - Compositio Mathematica PY - 1975 SP - 23 EP - 30 VL - 31 IS - 1 PB - Noordhoff International Publishing UR - http://www.numdam.org/item/CM_1975__31_1_23_0/ LA - en ID - CM_1975__31_1_23_0 ER -