On Certain Best Constants for Bernstein-Type Operators. - Jesús De La Cal; Javier Cárcamo (J. Approx. Theory, 2001)

A best constant for bivariate Bernstein and Szász-Mirakyan operators. - Jesús De La Cal; Javier Cárcamo; Ana M. Valle (J. Approx. Theory, 2003)

An extremal property of Bernstein operators. - Jesús De La Cal; Javier Cárcamo (J. Approx. Theory, 2007)

Hadamard Majorants for the Convex Order and Applications. - Jesús De La Cal; Javier Cárcamo; Luis Escauriaza (SMPS, 2010)