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@article{DE_1972_8_12_a9, author = {R. S. Levitin}, title = {A metric problem for {Frommer's} first discrimination problem}, journal = {Differencialʹnye uravneni\^a}, pages = {2187--2196}, publisher = {mathdoc}, volume = {8}, number = {12}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1972_8_12_a9/} }
R. S. Levitin. A metric problem for Frommer's first discrimination problem. Differencialʹnye uravneniâ, Tome 8 (1972) no. 12, pp. 2187-2196. http://geodesic.mathdoc.fr/item/DE_1972_8_12_a9/