Asymptotic of extremal polynomials in the complex plane. - Guillermo López Lagomasino; I. Pérez Izquierdo; Héctor Pijeira Cabrera (J. Approx. Theory, 2005)

Logarithmic asymptotics of contracted Sobolev extremal polynomials on the real line. - Guillermo López Lagomasino; F. Marcellán Español; Héctor Pijeira Cabrera (J. Approx. Theory, 2006)

Zeros and logarithmic asymptotics of Sobolev orthogonal polynomials for exponential weights. - Carlos Díaz-Mendoza; Ramón A. Orive Rodríguez; Héctor Pijeira Cabrera (J. Comput. Appl. Math., 2009)

Differential orthogonality: Laguerre and Hermite cases with applications. - Jorge Alberto Borrego Morell; Héctor Pijeira Cabrera (J. Approx. Theory, 2015)

Edge detection based on Krawtchouk polynomials. - Daniel Rivero-Castillo; Héctor Pijeira Cabrera; Pedro Assunção (J. Comput. Appl. Math., 2015)

Rational approximation and Sobolev-type orthogonality. - Abel Díaz-González; Héctor Pijeira Cabrera; Ignacio Pérez-Yzquierdo (J. Approx. Theory, 2020)