1. C. Bardaro, P.L. Butzer, R.L. Stens, G. Vinti, Approximation error of the Whittaker cardinal series in terms of an averaged modulus of smoothness covering discontinuous signals, J. Math. Anal. Appl., in press.
2. P.L. Butzer, J. Mawhin, P. Vetro (Eds.), Charles-Jean de La Vallée Poussin, Collected Works/Oeuvres scientifiques, vol. III, Académie Royale de Belgique, Brussels; Circolo Matematico di Palermo, Palermo, 2004.
3. An introduction to sampling analysis;Butzer,2001
4. The sampling theorem and linear prediction in signal analysis;Butzer;Jahresber. Deutsch. Math.-Verein.,1988
5. Whittaker–Kotelnikov–Shannon sampling theorem and aliasing error;Fang;J. Approx. Theory,1996