de Villiers, Johan, and Mpafereleni Rejoyce Gavhi-Molefe. “Geometric Convergence Rates for Cardinal Spline Subdivision With General Integer Arity”. J. Numer. Anal. Approx. Theory, vol. 48, no. 1, Sept. 2019, pp. 32-61, https://doi.org/10.33993/jnaat481-1164.