1. On the cardinal spline interpolant to eiut;de Boor;SIAM J. Math. Anal.,1976
2. Cardinal interpolation and spline functions, VIII. The Budan-Fourier Theorem for splines and applications;de Boor,1976
3. Zur periodischen Spline-Interpolation, Erschicnen in Spline-Funktionen;Meinardus,1974
4. Oscillation matrices and cardinal spline interpolation;Micchelli,1976
5. Cardinal L-splines;Michelli,1976