publication venue for 2-Orthogonal polynomials and Darboux transformations. Applications to the discrete Hahn-classical case. 431-452. 2021 Higher order recurrences and row sequences of Hermite-Pade approximation. 24:1830-1845. 2018 On an inverse problem for a linear combination of orthogonal polynomials. 20:570-585. 2014 (1,1)-D-omega-coherent pairs. 19:1828-1848. 2013 Bases of the space of solutions of some fourth-order linear difference equations: applications in rational approximation. 19:1632-1644. 2013 First order non-homogeneous q-difference equation for Stieltjes function characterizing q-orthogonal polynomials. 19:814-838. 2013 First-order non-homogeneous q-difference equation for Stieltjes function characterizing q-orthogonal polynomials. 19:814-838. 2013 Semiclassical linear functionals of class three. The symmetric case. 19:162-178. 2013 Quadratic decomposition of a family of H-q-semiclassical orthogonal polynomial sequences. 18:2039-2057. 2012 On semiclassical linear functionals of class s=2: classification and integral representations. 18:973-1000. 2012 A high-order q-difference equation for q-Hahn multiple orthogonal polynomials. 18:833-847. 2012 The holonomic equation of the Laguerre-Sobolev-type orthogonal polynomials: a non-diagonal case. 17:877-887. 2011