1. Belinsky, E. S.: Approximation by the Bochner-Riesz means and spherical modulus of continuity. Dopov. Akad. Nauk Ukr. RSR, Ser. A 7 (1975), 579–581. (Russian)
2. Burinska, Z. and K. Runovski: Homogeneous inequalities for trigonometric polynomials and band-limited functions (Abstract). In: 3. Workshop “Orthogonal polynomials”, Inzell, 14.-18.04. 2000 (Schriftenreihe des IBB), (2000), p. 17.
3. Burinska, Z., K. Runovski and H.-J. Schmeisser: On the method of approximation by families of linear polynomial operators. J. Anal. and Appl. 19 (2000), 677–693.
4. Burinska, Z., K. Runovski and H.-J. Schmeisser: On the approximation by generalized sampling series in Lp-metrics. J. Sampling Theory in Signal and Image Processing 5 (1) (2006), 59–87.
5. Butzer, P. L., G. Schmeisser and R. L. Stens: An Introduction to Sampling Analysis, Chapter 2 in: Sampling in Theory and Practice. Plenum/Kluwer, 2000.