1. The quasi-interpolant as a tool in elementary polynomial spline theory;de Boor,1973
2. A smooth and local interpolant with “small” kth derivative;de Boor,1975
3. On local linear functionals which vanish at all B-splines but one;de Boor,1976
4. A Practical Guide to Splines;de Boor,1978
5. On the existence of interpolating projections onto spline spaces;Demko;J. Approx. Theory,1985