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@article{MI_1972__7_1_189133, author = {{\CYRP}{\cyrl}. {\CYRK}{\cyra}{\cyrn}{\cyrn}{\cyra}{\cyrp}{\cyrp}{\cyra}{\cyrn}}, title = {{\CYRO} {\cyrl}{\cyru}{\cyrp}{\cyra}{\cyrh} {\cyrs}{\cyro} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyro}{\cyrm} {\cyrs}{\cyrl}{\cyra}{\cyrb}{\cyro}{\cyrishrt} {\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrt}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {200--205}, publisher = {mathdoc}, volume = {7}, number = {1}, year = {1972}, zbl = {0236.20053}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1972__7_1_189133/} }
Пл. Каннаппан. О лупах со свойством слабой обратимости. Matematičeskie issledovaniâ, Tome 7 (1972) no. 1, pp. 200-205. http://geodesic.mathdoc.fr/item/MI_1972__7_1_189133/