Ditzian, Z., & Totik, V. (1987). Moduli of smoothness. Springer-Verlag.
Chicago Edition CitationDitzian, Zeev, i V. Totik. Moduli of Smoothness. New York: Springer-Verlag, 1987.
Cita MLADitzian, Zeev, i V. Totik. Moduli of Smoothness. Springer-Verlag, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.