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@article{SEMR_2008_5_a55, author = {G. V. Dyatlov}, title = {On two problems}, journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a}, pages = {647--651}, publisher = {mathdoc}, volume = {5}, year = {2008}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/SEMR_2008_5_a55/} }
G. V. Dyatlov. On two problems. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 5 (2008), pp. 647-651. http://geodesic.mathdoc.fr/item/SEMR_2008_5_a55/