The dynamical U(n) quantum group. - Erik Koelink; Yvette Van Norden (Int. J. Math. Math. Sci., 2006)

Self-adjoint difference operators and classical solutions to the Stieltjes-Wigert moment problem. - Jacob S. Christiansen; Erik Koelink (J. Approx. Theory, 2006)

The J-matrix method. - Mourad E. H. Ismail; Erik Koelink (Adv. Appl. Math., 2011)

A tribute to Dennis Stanton. - Mourad E. H. Ismail; Erik Koelink; Victor Reiner (Adv. Appl. Math., 2011)

The indeterminate moment problem for the q-Meixner polynomials. - Wolter G. M. Groenevelt; Erik Koelink (J. Approx. Theory, 2011)

Matrix-valued little q-Jacobi polynomials. - Noud Aldenhoven; Erik Koelink; Ana M. de los Ríos (J. Approx. Theory, 2015)

In Memoriam: Mizan Rahman. - Mourad E. H. Ismail; Erik Koelink (J. Approx. Theory, 2016)

Matrix valued Hermite polynomials, Burchnall formulas and non-abelian Toda lattice. - Mourad E. H. Ismail; Erik Koelink; Pablo Román (Adv. Appl. Math., 2019)