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@article{MI_1990__113_190095, author = {{\CYRV}.{\CYRI}. {\CYRO}{\cyrn}{\cyro}{\cyrishrt} and {\CYRL}.{\CYRA}. {\CYRU}{\cyrr}{\cyrs}{\cyru}}, title = {$n$- {\cyra}{\cyrr}{\cyrn}{\cyrery}{\cyre} {\cyrl}{\cyru}{\cyrp}{\cyrery} {\cyrs}{\cyro} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyra}{\cyrm}{\cyri} {\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrt}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrs} {\cyro}{\cyrd}{\cyrn}{\cyri}{\cyrm} {\cyrp}{\cyra}{\cyrr}{\cyra}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyro}{\cyrm} {\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrshch}{\cyre}{\cyrn}{\cyri}{\cyrya}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {72--82}, publisher = {mathdoc}, volume = {113}, year = {1990}, zbl = {0744.20059}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1990__113_190095/} }
В.И. Оной; Л.А. Урсу. $n$- арные лупы со свойствами обратимости с одним параметром обращения. Matematičeskie issledovaniâ, Tome 113 (1990), pp. 72-82. http://geodesic.mathdoc.fr/item/MI_1990__113_190095/