On differential properties for bivariate orthogonal polynomials. - María Álvarez de Morales; Lidia Fernández; Teresa E. Pérez; Miguel A. Piñar (Numer. Algorithms, 2007)

A matrix Rodrigues formula for classical orthogonal polynomials in two variables. - María Álvarez de Morales; Lidia Fernández; Teresa E. Pérez; Miguel A. Piñar (J. Approx. Theory, 2009)

Bivariate orthogonal polynomials in the Lyskova class. - María Álvarez de Morales; Lidia Fernández; Teresa E. Pérez; Miguel A. Piñar (J. Comput. Appl. Math., 2009)