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@article{MI_1973__8_1_189203, author = {{\CYRYA}. {\CYRB}{\cyro}{\cyrg}{\cyrn}{\cyra}{\cyrr}}, title = {{\CYRZ}{\cyra}{\cyrm}{\cyre}{\cyrch}{\cyra}{\cyrn}{\cyri}{\cyre} {\cyro} {\cyrd}{\cyrv}{\cyro}{\cyrya}{\cyrk}{\cyro}- {\cyrs}{\cyrt}{\cyrr}{\cyro}{\cyrg}{\cyri}{\cyrh} {\cyrp}{\cyrl}{\cyryu}{\cyrs}- {\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyra}{\cyrh}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {217--219}, publisher = {mathdoc}, volume = {8}, number = {1}, year = {1973}, zbl = {0328.47017}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1973__8_1_189203/} }
Я. Богнар. Замечание о двояко- строгих плюс- операторах. Matematičeskie issledovaniâ, Tome 8 (1973) no. 1, pp. 217-219. http://geodesic.mathdoc.fr/item/MI_1973__8_1_189203/