On the order of convergence of Voronovskaja-type formulas. - Cristian Tacelli (Appl. Math. Lett., 2010)

Trotter's approximation of semigroups and order of convergence in C2, alpha-spaces. - Michele Campiti; Cristian Tacelli (J. Approx. Theory, 2010)

On the interpolation of discontinuous functions. - Michele Campiti; Giusy Mazzone; Cristian Tacelli (J. Approx. Theory, 2012)