A note on almost convex operators and saturation. - D. Cárdenas-Morales; P. Garrancho (Appl. Math. Lett., 2004)

Shape preserving approximation by Bernstein-type operators which fix polynomials. - D. Cárdenas-Morales; P. Garrancho; Francisco-Javier Muñoz-Delgado (Appl. Math. Comput., 2006)

A converse of asymptotic formulae in simultaneous approximation. - P. Garrancho; D. Cárdenas-Morales (Appl. Math. Comput., 2010)

Bernstein-type operators which preserve polynomials. - D. Cárdenas-Morales; P. Garrancho; Ioan Rasa (Comput. Math. Appl., 2011)

Saturation in multivariate simultaneous approximation. - D. Cárdenas-Morales; A. Fraguela; P. Garrancho (Math. Comput. Simul., 2011)

On asymptotic formulae via summability. - P. Garrancho; D. Cárdenas-Morales; F. Aguilera (Math. Comput. Simul., 2011)

Optimality of piecewise τ-linear interpolating operators. - D. Cárdenas-Morales; P. Garrancho; Ioan Rasa (Appl. Math. Comput., 2013)

Approximation properties of Bernstein-Durrmeyer type operators. - D. Cárdenas-Morales; P. Garrancho; Ioan Rasa (Appl. Math. Comput., 2014)