TY - JOUR AU - Z. I. Evdokimova TI - Operations with bases that can be obtained as the union of chains of a~basis of a~$(v)A$-operation JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1969 SP - 33 EP - 39 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1969_10_a4/ LA - ru ID - IVM_1969_10_a4 ER -