Algorithm 742: L2CXFT: A Fortran subroutine for least-squares data fitting with Nonnegative Second Divided Differences

Citation:

Demetriou IC. Algorithm 742: L2CXFT: A Fortran subroutine for least-squares data fitting with Nonnegative Second Divided Differences. ACM Trans. Math. Softw. 1995;21(1):98-110.