1. Angeloni, L. and Vinti, G., A unified approach to approximation results with applications to nonlinear sampling theory, Int. J. Math. Sci., 31, 93–128, 2004.
2. Bardaro, C., Butzer, P. L., Stens, R. L., and Vinti, G., Convergence in variation and rates of approximation for Bernstein-type polynomials and singular convolution integrals, Analysis (Munich), 23(4), 299–340, 2003.
3. Bardaro, C., Butzer, P. L., Stens, R. L. and Vinti, G., Approximation error of the Whittaker cardinal series in terms of an averaged modulus of smoothness covering discontinuous signals, J. Math. Anal. Appl., 3161, 269–306, 2006.
4. Bardaro, C. and Mantellini, I., On global approximation properties of discrete operators in Orlicz spaces, J. Inequal. Pure Appl. Math. 6(4), Article 123 (electronic), 2005.
5. Bardaro, C., Musielak, J., and Vinti, G., Nonlinear Integral Operators and Applications, de Gruyter Series in Nonlinear Analysis and Applications, vol. 9, Walter de Gruyter & Co., Berlin, 2003.