@article {28975,
	title = {Algorithm 742: L2CXFT: A Fortran subroutine for least-squares data fitting with Nonnegative Second Divided Differences},
	journal = {ACM Trans. Math. Softw.},
	volume = {21},
	year = {1995},
	pages = {98-110},
	author = {I. C. Demetriou}
}
