MathSciNet bibliographic data MR126697 (23 #A3992) 46.30 Alʹper, S. Ja. On $\varepsilon$$\varepsilon$-entropy of certain classes of functions. Dokl. Akad. Nauk SSSR 132 977--979 (Russian); translated as Soviet Math. Dokl. 1 1960 667–669. Links to the journal or article are not yet available

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