Zeros of Sobolev orthogonal polynomials of Hermite type. - Marcel G. de Bruin; Wolter G. M. Groenevelt; Henk G. Meijer (Appl. Math. Comput., 2002)

Zeros of Sobolev Orthogonal Polynomials of Gegenbauer Type. - Wolter G. M. Groenevelt (J. Approx. Theory, 2002)

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

Orthogonality relations for Al-Salam-Carlitz polynomials of type II. - Wolter G. M. Groenevelt (J. Approx. Theory, 2015)