1. The Theory of Splines and Their Applications;Ahlberg,1967
2. Numerical procedures for interpolation by spline functions;Greville;SIAM J. Numer. Anal.,1964
3. Table for third-degree spline interpolation with equally spaced arguments;Greville;Math. Comput.,1970
4. Über die Berechnung von natürlichen interpolierenden Polynom-Splines fünften Grades mit äquidistanten Knoten;Merz,1971