1. On polynomials orthogonal with respect to an inner product involving differences;Bavinck;J. Comp. Appl. Math.,1995
2. A direct approach to Koekoek's differential equation for generalized Laguerre polynomials;Bavinck;Acta Math. Hungar.,1995
3. Bavinck, H. — On polynomials orthogonal with respect to an inner product involving differences (The general case). TWI Report 93-32. To appear in Appl. Anal.
4. On a difference equation for generalizations of Charlier polynomials;Bavinck;J. Approx. Theory,1995
5. Koekoek, J., R. Koekoek and H. Bavinck — On differential equations for Sobolev-type Laguerre polynomials. To appear.