Differential operators having Sobolev-type Laguerre polynomials as eigenfunctions: new developments

A note on the Koekoeks' differential equation for generalized Jacobi polynomials

Closed-form dynamic response of damped mass-spring cascades

Differential operators having sobolev-type gegenbauer polynomials as eigenfunctions

Differential operators having symmetric orthogonal polynomials as eigenfunctions

Generalizations of Meixner polynomials which are eigenfunctions of a difference operator

On a linear perturbation of the Laguerre operator

Difference operators with Sobolev type Meixner polynomials as eigenfunctions [niet eerder opgevoerd]