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@article{MZM_2006_80_1_a20, author = {V. A. Sereda and A. I. Sozutov}, title = {On a {Question} in the {Kourovka} {Notebook}}, journal = {Matemati\v{c}eskie zametki}, pages = {154--155}, publisher = {mathdoc}, volume = {80}, number = {1}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_1_a20/} }
V. A. Sereda; A. I. Sozutov. On a Question in the Kourovka Notebook. Matematičeskie zametki, Tome 80 (2006) no. 1, pp. 154-155. http://geodesic.mathdoc.fr/item/MZM_2006_80_1_a20/