Ditzian, Z., & Totik, V. (1987). Moduli of smoothness. Springer-Verlag.
Chicago Style aipamenaDitzian, Zeev, and V. Totik. Moduli of Smoothness. New York: Springer-Verlag, 1987.
MLA aipamenaDitzian, Zeev, and V. Totik. Moduli of Smoothness. Springer-Verlag, 1987.
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