@article{IVM_1969_10_a4,
     author = {Z. I. Evdokimova},
     title = {Operations with bases that can be obtained as the union of chains of a~basis of a~$(v)A$-operation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {33--39},
     publisher = {mathdoc},
     number = {10},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1969_10_a4/}
}