@article{DA_1970_4_a17,
     author = {I. A. Itskovich and S. I. Spivak},
     title = {{\CYRA}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrz} {\cyrp}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyro}{\cyrv} {\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrp}{\cyrr}{\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrm}{\cyrm}{\cyri}{\cyrr}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyrya} {\cyrp}{\cyrr}{\cyri} {\cyrp}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyro}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrk}{\cyri}{\cyrn}{\cyre}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrm}{\cyro}{\cyrd}{\cyre}{\cyrl}{\cyri} {\cyrs}{\cyrl}{\cyro}{\cyrzh}{\cyrn}{\cyro}{\cyrishrt} {\cyrh}{\cyri}{\cyrm}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrr}{\cyre}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyri}},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {142--147},
     publisher = {mathdoc},
     number = {4},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1970_4_a17/}
}