TY - JOUR AU - N. P. Belyakova TI - Definability of free abelian groups of finite rank by the lattice of subgroups that are invariant with respect to an involutory automorphism JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1971 SP - 9 EP - 14 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1971_6_a1/ LA - ru ID - IVM_1971_6_a1 ER -