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@article{TM_2011_274_a1, author = {P. S. Novikov and S. I. Adian}, title = {On a~semicontinuous function}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {10--14}, publisher = {mathdoc}, volume = {274}, year = {2011}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_2011_274_a1/} }
P. S. Novikov; S. I. Adian. On a~semicontinuous function. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Algorithmic aspects of algebra and logic, Tome 274 (2011), pp. 10-14. http://geodesic.mathdoc.fr/item/TM_2011_274_a1/
[1] Keldysh L.V., “O prostykh funktsiyakh klassa $\alpha $”, DAN SSSR, 4:4 (1934), 192–197 | Zbl