@article{IVM_1970_5_a4,
     author = {O. S. Ivan'kovskaya},
     title = {The powers of certain matrix operators applied to the bounded elements of a~ring},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {40--42},
     publisher = {mathdoc},
     number = {5},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_5_a4/}
}