Javier Quintero-Roba, Extremal Polynomials. Asymptotic Behavior and Electrostatic Equilibrium Models. Universidad Carlos III de Madrid, 2023.

Abel Díaz-González, Sobolev Extremal Polynomials and Applications, Universidad Carlos III de Madrid, 2020.

Daniel Rivero-Castillo. Iterated Integrals of Orthogonal Polynomials and Applications, Universidad Carlos III de Madrid, 2017. 

Jorge Borrego-Morell, Orthogonal Polynomials with respect to a Differential Operator and Matrix Orthogonal Polynomials, Universidad Carlos III de Madrid, 2013. 

Edmundo Huertas-Cejudo, Analytic Properties of Krall-type and Sobolev-type Orthogonal Polynomials, Universidad Carlos III de Madrid, 2012. 

Ignacio Pérez-Yzquierdo, Asymptotic of Extremal Sobolev Polynomials (in spanish), Universidad de La Habana, 2007.

Laura Decalo-Salgado, who is working on moment problem and recurrence relation. Universidad Carlos III de Madrid, Spain. 

Juan Toribio-Milane, who is working on electrostatic interpretation of zeros of Sobolev-type orthogonal polynomials.  Universidad Autónoma de Santo Domingo, Dominican Republic.

Carlos Féliz-Sánchez, who is working on Sobolev extremal polynomials. Universidad Autónoma de Santo Domingo, Dominican Republic.