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References
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Deville R., Godefroy G., Zizler V., Smoothness and renorming in Banach spaces, Longman Scientific & Technical, N. Y., 1993 |
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Semenov S. M., Simmetricheskie funktsii na prostranstvakh $L^p$, Dis. …kand. fiz.-matem. nauk, MGU, M., 1973 |
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Shapiro H. S., Topics in approximation theory, Lecture Notes in Mathematics, 187, Berlin, 1971 |
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Alekseev V. M., Tikhomirov V. M., Fomin S. V., Optimalnoe upravlenie, Nauka, M., 1979 |
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Tsarkov I. G., “Sglazhivanie ravnomernykh otobrazhenii v prostranstvakh $L^p$”, Matem. zametki, 54:3 (1993), 123–140 |